4b324c8f5eda181dbc992bb67d8d6b3e538732c5
   1git(1)
   2======
   3
   4NAME
   5----
   6git - the stupid content tracker
   7
   8
   9SYNOPSIS
  10--------
  11[verse]
  12'git' [--version] [--help] [-C <path>] [-c <name>=<value>]
  13    [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
  14    [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]
  15    [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
  16    <command> [<args>]
  17
  18DESCRIPTION
  19-----------
  20Git is a fast, scalable, distributed revision control system with an
  21unusually rich command set that provides both high-level operations
  22and full access to internals.
  23
  24See linkgit:gittutorial[7] to get started, then see
  25linkgit:giteveryday[7] for a useful minimum set of
  26commands.  The link:user-manual.html[Git User's Manual] has a more
  27in-depth introduction.
  28
  29After you mastered the basic concepts, you can come back to this
  30page to learn what commands Git offers.  You can learn more about
  31individual Git commands with "git help command".  linkgit:gitcli[7]
  32manual page gives you an overview of the command-line command syntax.
  33
  34Formatted and hyperlinked version of the latest Git documentation
  35can be viewed at `http://git-htmldocs.googlecode.com/git/git.html`.
  36
  37ifdef::stalenotes[]
  38[NOTE]
  39============
  40
  41You are reading the documentation for the latest (possibly
  42unreleased) version of Git, that is available from the 'master'
  43branch of the `git.git` repository.
  44Documentation for older releases are available here:
  45
  46* link:v2.7.3/git.html[documentation for release 2.7.3]
  47
  48* release notes for
  49  link:RelNotes/2.7.3.txt[2.7.3],
  50  link:RelNotes/2.7.2.txt[2.7.2],
  51  link:RelNotes/2.7.1.txt[2.7.1],
  52  link:RelNotes/2.7.0.txt[2.7].
  53
  54* link:v2.6.7/git.html[documentation for release 2.6.7]
  55
  56* release notes for
  57  link:RelNotes/2.6.7.txt[2.6.7],
  58  link:RelNotes/2.6.6.txt[2.6.6],
  59  link:RelNotes/2.6.5.txt[2.6.5],
  60  link:RelNotes/2.6.4.txt[2.6.4],
  61  link:RelNotes/2.6.3.txt[2.6.3],
  62  link:RelNotes/2.6.2.txt[2.6.2],
  63  link:RelNotes/2.6.1.txt[2.6.1],
  64  link:RelNotes/2.6.0.txt[2.6].
  65
  66* link:v2.5.6/git.html[documentation for release 2.5.6]
  67
  68* release notes for
  69  link:RelNotes/2.5.6.txt[2.5.6],
  70  link:RelNotes/2.5.5.txt[2.5.5],
  71  link:RelNotes/2.5.4.txt[2.5.4],
  72  link:RelNotes/2.5.3.txt[2.5.3],
  73  link:RelNotes/2.5.2.txt[2.5.2],
  74  link:RelNotes/2.5.1.txt[2.5.1],
  75  link:RelNotes/2.5.0.txt[2.5].
  76
  77* link:v2.4.12/git.html[documentation for release 2.4.12]
  78
  79* release notes for
  80  link:RelNotes/2.4.12.txt[2.4.12],
  81  link:RelNotes/2.4.11.txt[2.4.11],
  82  link:RelNotes/2.4.10.txt[2.4.10],
  83  link:RelNotes/2.4.9.txt[2.4.9],
  84  link:RelNotes/2.4.8.txt[2.4.8],
  85  link:RelNotes/2.4.7.txt[2.4.7],
  86  link:RelNotes/2.4.6.txt[2.4.6],
  87  link:RelNotes/2.4.5.txt[2.4.5],
  88  link:RelNotes/2.4.4.txt[2.4.4],
  89  link:RelNotes/2.4.3.txt[2.4.3],
  90  link:RelNotes/2.4.2.txt[2.4.2],
  91  link:RelNotes/2.4.1.txt[2.4.1],
  92  link:RelNotes/2.4.0.txt[2.4].
  93
  94* link:v2.3.10/git.html[documentation for release 2.3.10]
  95
  96* release notes for
  97  link:RelNotes/2.3.10.txt[2.3.10],
  98  link:RelNotes/2.3.9.txt[2.3.9],
  99  link:RelNotes/2.3.8.txt[2.3.8],
 100  link:RelNotes/2.3.7.txt[2.3.7],
 101  link:RelNotes/2.3.6.txt[2.3.6],
 102  link:RelNotes/2.3.5.txt[2.3.5],
 103  link:RelNotes/2.3.4.txt[2.3.4],
 104  link:RelNotes/2.3.3.txt[2.3.3],
 105  link:RelNotes/2.3.2.txt[2.3.2],
 106  link:RelNotes/2.3.1.txt[2.3.1],
 107  link:RelNotes/2.3.0.txt[2.3].
 108
 109* link:v2.2.3/git.html[documentation for release 2.2.3]
 110
 111* release notes for
 112  link:RelNotes/2.2.3.txt[2.2.3],
 113  link:RelNotes/2.2.2.txt[2.2.2],
 114  link:RelNotes/2.2.1.txt[2.2.1],
 115  link:RelNotes/2.2.0.txt[2.2].
 116
 117* link:v2.1.4/git.html[documentation for release 2.1.4]
 118
 119* release notes for
 120  link:RelNotes/2.1.4.txt[2.1.4],
 121  link:RelNotes/2.1.3.txt[2.1.3],
 122  link:RelNotes/2.1.2.txt[2.1.2],
 123  link:RelNotes/2.1.1.txt[2.1.1],
 124  link:RelNotes/2.1.0.txt[2.1].
 125
 126* link:v2.0.5/git.html[documentation for release 2.0.5]
 127
 128* release notes for
 129  link:RelNotes/2.0.5.txt[2.0.5],
 130  link:RelNotes/2.0.4.txt[2.0.4],
 131  link:RelNotes/2.0.3.txt[2.0.3],
 132  link:RelNotes/2.0.2.txt[2.0.2],
 133  link:RelNotes/2.0.1.txt[2.0.1],
 134  link:RelNotes/2.0.0.txt[2.0.0].
 135
 136* link:v1.9.5/git.html[documentation for release 1.9.5]
 137
 138* release notes for
 139  link:RelNotes/1.9.5.txt[1.9.5],
 140  link:RelNotes/1.9.4.txt[1.9.4],
 141  link:RelNotes/1.9.3.txt[1.9.3],
 142  link:RelNotes/1.9.2.txt[1.9.2],
 143  link:RelNotes/1.9.1.txt[1.9.1],
 144  link:RelNotes/1.9.0.txt[1.9.0].
 145
 146* link:v1.8.5.6/git.html[documentation for release 1.8.5.6]
 147
 148* release notes for
 149  link:RelNotes/1.8.5.6.txt[1.8.5.6],
 150  link:RelNotes/1.8.5.5.txt[1.8.5.5],
 151  link:RelNotes/1.8.5.4.txt[1.8.5.4],
 152  link:RelNotes/1.8.5.3.txt[1.8.5.3],
 153  link:RelNotes/1.8.5.2.txt[1.8.5.2],
 154  link:RelNotes/1.8.5.1.txt[1.8.5.1],
 155  link:RelNotes/1.8.5.txt[1.8.5].
 156
 157* link:v1.8.4.5/git.html[documentation for release 1.8.4.5]
 158
 159* release notes for
 160  link:RelNotes/1.8.4.5.txt[1.8.4.5],
 161  link:RelNotes/1.8.4.4.txt[1.8.4.4],
 162  link:RelNotes/1.8.4.3.txt[1.8.4.3],
 163  link:RelNotes/1.8.4.2.txt[1.8.4.2],
 164  link:RelNotes/1.8.4.1.txt[1.8.4.1],
 165  link:RelNotes/1.8.4.txt[1.8.4].
 166
 167* link:v1.8.3.4/git.html[documentation for release 1.8.3.4]
 168
 169* release notes for
 170  link:RelNotes/1.8.3.4.txt[1.8.3.4],
 171  link:RelNotes/1.8.3.3.txt[1.8.3.3],
 172  link:RelNotes/1.8.3.2.txt[1.8.3.2],
 173  link:RelNotes/1.8.3.1.txt[1.8.3.1],
 174  link:RelNotes/1.8.3.txt[1.8.3].
 175
 176* link:v1.8.2.3/git.html[documentation for release 1.8.2.3]
 177
 178* release notes for
 179  link:RelNotes/1.8.2.3.txt[1.8.2.3],
 180  link:RelNotes/1.8.2.2.txt[1.8.2.2],
 181  link:RelNotes/1.8.2.1.txt[1.8.2.1],
 182  link:RelNotes/1.8.2.txt[1.8.2].
 183
 184* link:v1.8.1.6/git.html[documentation for release 1.8.1.6]
 185
 186* release notes for
 187  link:RelNotes/1.8.1.6.txt[1.8.1.6],
 188  link:RelNotes/1.8.1.5.txt[1.8.1.5],
 189  link:RelNotes/1.8.1.4.txt[1.8.1.4],
 190  link:RelNotes/1.8.1.3.txt[1.8.1.3],
 191  link:RelNotes/1.8.1.2.txt[1.8.1.2],
 192  link:RelNotes/1.8.1.1.txt[1.8.1.1],
 193  link:RelNotes/1.8.1.txt[1.8.1].
 194
 195* link:v1.8.0.3/git.html[documentation for release 1.8.0.3]
 196
 197* release notes for
 198  link:RelNotes/1.8.0.3.txt[1.8.0.3],
 199  link:RelNotes/1.8.0.2.txt[1.8.0.2],
 200  link:RelNotes/1.8.0.1.txt[1.8.0.1],
 201  link:RelNotes/1.8.0.txt[1.8.0].
 202
 203* link:v1.7.12.4/git.html[documentation for release 1.7.12.4]
 204
 205* release notes for
 206  link:RelNotes/1.7.12.4.txt[1.7.12.4],
 207  link:RelNotes/1.7.12.3.txt[1.7.12.3],
 208  link:RelNotes/1.7.12.2.txt[1.7.12.2],
 209  link:RelNotes/1.7.12.1.txt[1.7.12.1],
 210  link:RelNotes/1.7.12.txt[1.7.12].
 211
 212* link:v1.7.11.7/git.html[documentation for release 1.7.11.7]
 213
 214* release notes for
 215  link:RelNotes/1.7.11.7.txt[1.7.11.7],
 216  link:RelNotes/1.7.11.6.txt[1.7.11.6],
 217  link:RelNotes/1.7.11.5.txt[1.7.11.5],
 218  link:RelNotes/1.7.11.4.txt[1.7.11.4],
 219  link:RelNotes/1.7.11.3.txt[1.7.11.3],
 220  link:RelNotes/1.7.11.2.txt[1.7.11.2],
 221  link:RelNotes/1.7.11.1.txt[1.7.11.1],
 222  link:RelNotes/1.7.11.txt[1.7.11].
 223
 224* link:v1.7.10.5/git.html[documentation for release 1.7.10.5]
 225
 226* release notes for
 227  link:RelNotes/1.7.10.5.txt[1.7.10.5],
 228  link:RelNotes/1.7.10.4.txt[1.7.10.4],
 229  link:RelNotes/1.7.10.3.txt[1.7.10.3],
 230  link:RelNotes/1.7.10.2.txt[1.7.10.2],
 231  link:RelNotes/1.7.10.1.txt[1.7.10.1],
 232  link:RelNotes/1.7.10.txt[1.7.10].
 233
 234* link:v1.7.9.7/git.html[documentation for release 1.7.9.7]
 235
 236* release notes for
 237  link:RelNotes/1.7.9.7.txt[1.7.9.7],
 238  link:RelNotes/1.7.9.6.txt[1.7.9.6],
 239  link:RelNotes/1.7.9.5.txt[1.7.9.5],
 240  link:RelNotes/1.7.9.4.txt[1.7.9.4],
 241  link:RelNotes/1.7.9.3.txt[1.7.9.3],
 242  link:RelNotes/1.7.9.2.txt[1.7.9.2],
 243  link:RelNotes/1.7.9.1.txt[1.7.9.1],
 244  link:RelNotes/1.7.9.txt[1.7.9].
 245
 246* link:v1.7.8.6/git.html[documentation for release 1.7.8.6]
 247
 248* release notes for
 249  link:RelNotes/1.7.8.6.txt[1.7.8.6],
 250  link:RelNotes/1.7.8.5.txt[1.7.8.5],
 251  link:RelNotes/1.7.8.4.txt[1.7.8.4],
 252  link:RelNotes/1.7.8.3.txt[1.7.8.3],
 253  link:RelNotes/1.7.8.2.txt[1.7.8.2],
 254  link:RelNotes/1.7.8.1.txt[1.7.8.1],
 255  link:RelNotes/1.7.8.txt[1.7.8].
 256
 257* link:v1.7.7.7/git.html[documentation for release 1.7.7.7]
 258
 259* release notes for
 260  link:RelNotes/1.7.7.7.txt[1.7.7.7],
 261  link:RelNotes/1.7.7.6.txt[1.7.7.6],
 262  link:RelNotes/1.7.7.5.txt[1.7.7.5],
 263  link:RelNotes/1.7.7.4.txt[1.7.7.4],
 264  link:RelNotes/1.7.7.3.txt[1.7.7.3],
 265  link:RelNotes/1.7.7.2.txt[1.7.7.2],
 266  link:RelNotes/1.7.7.1.txt[1.7.7.1],
 267  link:RelNotes/1.7.7.txt[1.7.7].
 268
 269* link:v1.7.6.6/git.html[documentation for release 1.7.6.6]
 270
 271* release notes for
 272  link:RelNotes/1.7.6.6.txt[1.7.6.6],
 273  link:RelNotes/1.7.6.5.txt[1.7.6.5],
 274  link:RelNotes/1.7.6.4.txt[1.7.6.4],
 275  link:RelNotes/1.7.6.3.txt[1.7.6.3],
 276  link:RelNotes/1.7.6.2.txt[1.7.6.2],
 277  link:RelNotes/1.7.6.1.txt[1.7.6.1],
 278  link:RelNotes/1.7.6.txt[1.7.6].
 279
 280* link:v1.7.5.4/git.html[documentation for release 1.7.5.4]
 281
 282* release notes for
 283  link:RelNotes/1.7.5.4.txt[1.7.5.4],
 284  link:RelNotes/1.7.5.3.txt[1.7.5.3],
 285  link:RelNotes/1.7.5.2.txt[1.7.5.2],
 286  link:RelNotes/1.7.5.1.txt[1.7.5.1],
 287  link:RelNotes/1.7.5.txt[1.7.5].
 288
 289* link:v1.7.4.5/git.html[documentation for release 1.7.4.5]
 290
 291* release notes for
 292  link:RelNotes/1.7.4.5.txt[1.7.4.5],
 293  link:RelNotes/1.7.4.4.txt[1.7.4.4],
 294  link:RelNotes/1.7.4.3.txt[1.7.4.3],
 295  link:RelNotes/1.7.4.2.txt[1.7.4.2],
 296  link:RelNotes/1.7.4.1.txt[1.7.4.1],
 297  link:RelNotes/1.7.4.txt[1.7.4].
 298
 299* link:v1.7.3.5/git.html[documentation for release 1.7.3.5]
 300
 301* release notes for
 302  link:RelNotes/1.7.3.5.txt[1.7.3.5],
 303  link:RelNotes/1.7.3.4.txt[1.7.3.4],
 304  link:RelNotes/1.7.3.3.txt[1.7.3.3],
 305  link:RelNotes/1.7.3.2.txt[1.7.3.2],
 306  link:RelNotes/1.7.3.1.txt[1.7.3.1],
 307  link:RelNotes/1.7.3.txt[1.7.3].
 308
 309* link:v1.7.2.5/git.html[documentation for release 1.7.2.5]
 310
 311* release notes for
 312  link:RelNotes/1.7.2.5.txt[1.7.2.5],
 313  link:RelNotes/1.7.2.4.txt[1.7.2.4],
 314  link:RelNotes/1.7.2.3.txt[1.7.2.3],
 315  link:RelNotes/1.7.2.2.txt[1.7.2.2],
 316  link:RelNotes/1.7.2.1.txt[1.7.2.1],
 317  link:RelNotes/1.7.2.txt[1.7.2].
 318
 319* link:v1.7.1.4/git.html[documentation for release 1.7.1.4]
 320
 321* release notes for
 322  link:RelNotes/1.7.1.4.txt[1.7.1.4],
 323  link:RelNotes/1.7.1.3.txt[1.7.1.3],
 324  link:RelNotes/1.7.1.2.txt[1.7.1.2],
 325  link:RelNotes/1.7.1.1.txt[1.7.1.1],
 326  link:RelNotes/1.7.1.txt[1.7.1].
 327
 328* link:v1.7.0.9/git.html[documentation for release 1.7.0.9]
 329
 330* release notes for
 331  link:RelNotes/1.7.0.9.txt[1.7.0.9],
 332  link:RelNotes/1.7.0.8.txt[1.7.0.8],
 333  link:RelNotes/1.7.0.7.txt[1.7.0.7],
 334  link:RelNotes/1.7.0.6.txt[1.7.0.6],
 335  link:RelNotes/1.7.0.5.txt[1.7.0.5],
 336  link:RelNotes/1.7.0.4.txt[1.7.0.4],
 337  link:RelNotes/1.7.0.3.txt[1.7.0.3],
 338  link:RelNotes/1.7.0.2.txt[1.7.0.2],
 339  link:RelNotes/1.7.0.1.txt[1.7.0.1],
 340  link:RelNotes/1.7.0.txt[1.7.0].
 341
 342* link:v1.6.6.3/git.html[documentation for release 1.6.6.3]
 343
 344* release notes for
 345  link:RelNotes/1.6.6.3.txt[1.6.6.3],
 346  link:RelNotes/1.6.6.2.txt[1.6.6.2],
 347  link:RelNotes/1.6.6.1.txt[1.6.6.1],
 348  link:RelNotes/1.6.6.txt[1.6.6].
 349
 350* link:v1.6.5.9/git.html[documentation for release 1.6.5.9]
 351
 352* release notes for
 353  link:RelNotes/1.6.5.9.txt[1.6.5.9],
 354  link:RelNotes/1.6.5.8.txt[1.6.5.8],
 355  link:RelNotes/1.6.5.7.txt[1.6.5.7],
 356  link:RelNotes/1.6.5.6.txt[1.6.5.6],
 357  link:RelNotes/1.6.5.5.txt[1.6.5.5],
 358  link:RelNotes/1.6.5.4.txt[1.6.5.4],
 359  link:RelNotes/1.6.5.3.txt[1.6.5.3],
 360  link:RelNotes/1.6.5.2.txt[1.6.5.2],
 361  link:RelNotes/1.6.5.1.txt[1.6.5.1],
 362  link:RelNotes/1.6.5.txt[1.6.5].
 363
 364* link:v1.6.4.5/git.html[documentation for release 1.6.4.5]
 365
 366* release notes for
 367  link:RelNotes/1.6.4.5.txt[1.6.4.5],
 368  link:RelNotes/1.6.4.4.txt[1.6.4.4],
 369  link:RelNotes/1.6.4.3.txt[1.6.4.3],
 370  link:RelNotes/1.6.4.2.txt[1.6.4.2],
 371  link:RelNotes/1.6.4.1.txt[1.6.4.1],
 372  link:RelNotes/1.6.4.txt[1.6.4].
 373
 374* link:v1.6.3.4/git.html[documentation for release 1.6.3.4]
 375
 376* release notes for
 377  link:RelNotes/1.6.3.4.txt[1.6.3.4],
 378  link:RelNotes/1.6.3.3.txt[1.6.3.3],
 379  link:RelNotes/1.6.3.2.txt[1.6.3.2],
 380  link:RelNotes/1.6.3.1.txt[1.6.3.1],
 381  link:RelNotes/1.6.3.txt[1.6.3].
 382
 383* release notes for
 384  link:RelNotes/1.6.2.5.txt[1.6.2.5],
 385  link:RelNotes/1.6.2.4.txt[1.6.2.4],
 386  link:RelNotes/1.6.2.3.txt[1.6.2.3],
 387  link:RelNotes/1.6.2.2.txt[1.6.2.2],
 388  link:RelNotes/1.6.2.1.txt[1.6.2.1],
 389  link:RelNotes/1.6.2.txt[1.6.2].
 390
 391* link:v1.6.1.3/git.html[documentation for release 1.6.1.3]
 392
 393* release notes for
 394  link:RelNotes/1.6.1.3.txt[1.6.1.3],
 395  link:RelNotes/1.6.1.2.txt[1.6.1.2],
 396  link:RelNotes/1.6.1.1.txt[1.6.1.1],
 397  link:RelNotes/1.6.1.txt[1.6.1].
 398
 399* link:v1.6.0.6/git.html[documentation for release 1.6.0.6]
 400
 401* release notes for
 402  link:RelNotes/1.6.0.6.txt[1.6.0.6],
 403  link:RelNotes/1.6.0.5.txt[1.6.0.5],
 404  link:RelNotes/1.6.0.4.txt[1.6.0.4],
 405  link:RelNotes/1.6.0.3.txt[1.6.0.3],
 406  link:RelNotes/1.6.0.2.txt[1.6.0.2],
 407  link:RelNotes/1.6.0.1.txt[1.6.0.1],
 408  link:RelNotes/1.6.0.txt[1.6.0].
 409
 410* link:v1.5.6.6/git.html[documentation for release 1.5.6.6]
 411
 412* release notes for
 413  link:RelNotes/1.5.6.6.txt[1.5.6.6],
 414  link:RelNotes/1.5.6.5.txt[1.5.6.5],
 415  link:RelNotes/1.5.6.4.txt[1.5.6.4],
 416  link:RelNotes/1.5.6.3.txt[1.5.6.3],
 417  link:RelNotes/1.5.6.2.txt[1.5.6.2],
 418  link:RelNotes/1.5.6.1.txt[1.5.6.1],
 419  link:RelNotes/1.5.6.txt[1.5.6].
 420
 421* link:v1.5.5.6/git.html[documentation for release 1.5.5.6]
 422
 423* release notes for
 424  link:RelNotes/1.5.5.6.txt[1.5.5.6],
 425  link:RelNotes/1.5.5.5.txt[1.5.5.5],
 426  link:RelNotes/1.5.5.4.txt[1.5.5.4],
 427  link:RelNotes/1.5.5.3.txt[1.5.5.3],
 428  link:RelNotes/1.5.5.2.txt[1.5.5.2],
 429  link:RelNotes/1.5.5.1.txt[1.5.5.1],
 430  link:RelNotes/1.5.5.txt[1.5.5].
 431
 432* link:v1.5.4.7/git.html[documentation for release 1.5.4.7]
 433
 434* release notes for
 435  link:RelNotes/1.5.4.7.txt[1.5.4.7],
 436  link:RelNotes/1.5.4.6.txt[1.5.4.6],
 437  link:RelNotes/1.5.4.5.txt[1.5.4.5],
 438  link:RelNotes/1.5.4.4.txt[1.5.4.4],
 439  link:RelNotes/1.5.4.3.txt[1.5.4.3],
 440  link:RelNotes/1.5.4.2.txt[1.5.4.2],
 441  link:RelNotes/1.5.4.1.txt[1.5.4.1],
 442  link:RelNotes/1.5.4.txt[1.5.4].
 443
 444* link:v1.5.3.8/git.html[documentation for release 1.5.3.8]
 445
 446* release notes for
 447  link:RelNotes/1.5.3.8.txt[1.5.3.8],
 448  link:RelNotes/1.5.3.7.txt[1.5.3.7],
 449  link:RelNotes/1.5.3.6.txt[1.5.3.6],
 450  link:RelNotes/1.5.3.5.txt[1.5.3.5],
 451  link:RelNotes/1.5.3.4.txt[1.5.3.4],
 452  link:RelNotes/1.5.3.3.txt[1.5.3.3],
 453  link:RelNotes/1.5.3.2.txt[1.5.3.2],
 454  link:RelNotes/1.5.3.1.txt[1.5.3.1],
 455  link:RelNotes/1.5.3.txt[1.5.3].
 456
 457* link:v1.5.2.5/git.html[documentation for release 1.5.2.5]
 458
 459* release notes for
 460  link:RelNotes/1.5.2.5.txt[1.5.2.5],
 461  link:RelNotes/1.5.2.4.txt[1.5.2.4],
 462  link:RelNotes/1.5.2.3.txt[1.5.2.3],
 463  link:RelNotes/1.5.2.2.txt[1.5.2.2],
 464  link:RelNotes/1.5.2.1.txt[1.5.2.1],
 465  link:RelNotes/1.5.2.txt[1.5.2].
 466
 467* link:v1.5.1.6/git.html[documentation for release 1.5.1.6]
 468
 469* release notes for
 470  link:RelNotes/1.5.1.6.txt[1.5.1.6],
 471  link:RelNotes/1.5.1.5.txt[1.5.1.5],
 472  link:RelNotes/1.5.1.4.txt[1.5.1.4],
 473  link:RelNotes/1.5.1.3.txt[1.5.1.3],
 474  link:RelNotes/1.5.1.2.txt[1.5.1.2],
 475  link:RelNotes/1.5.1.1.txt[1.5.1.1],
 476  link:RelNotes/1.5.1.txt[1.5.1].
 477
 478* link:v1.5.0.7/git.html[documentation for release 1.5.0.7]
 479
 480* release notes for
 481  link:RelNotes/1.5.0.7.txt[1.5.0.7],
 482  link:RelNotes/1.5.0.6.txt[1.5.0.6],
 483  link:RelNotes/1.5.0.5.txt[1.5.0.5],
 484  link:RelNotes/1.5.0.3.txt[1.5.0.3],
 485  link:RelNotes/1.5.0.2.txt[1.5.0.2],
 486  link:RelNotes/1.5.0.1.txt[1.5.0.1],
 487  link:RelNotes/1.5.0.txt[1.5.0].
 488
 489* documentation for release link:v1.4.4.4/git.html[1.4.4.4],
 490  link:v1.3.3/git.html[1.3.3],
 491  link:v1.2.6/git.html[1.2.6],
 492  link:v1.0.13/git.html[1.0.13].
 493
 494============
 495
 496endif::stalenotes[]
 497
 498OPTIONS
 499-------
 500--version::
 501        Prints the Git suite version that the 'git' program came from.
 502
 503--help::
 504        Prints the synopsis and a list of the most commonly used
 505        commands. If the option '--all' or '-a' is given then all
 506        available commands are printed. If a Git command is named this
 507        option will bring up the manual page for that command.
 508+
 509Other options are available to control how the manual page is
 510displayed. See linkgit:git-help[1] for more information,
 511because `git --help ...` is converted internally into `git
 512help ...`.
 513
 514-C <path>::
 515        Run as if git was started in '<path>' instead of the current working
 516        directory.  When multiple `-C` options are given, each subsequent
 517        non-absolute `-C <path>` is interpreted relative to the preceding `-C
 518        <path>`.
 519+
 520This option affects options that expect path name like `--git-dir` and
 521`--work-tree` in that their interpretations of the path names would be
 522made relative to the working directory caused by the `-C` option. For
 523example the following invocations are equivalent:
 524
 525    git --git-dir=a.git --work-tree=b -C c status
 526    git --git-dir=c/a.git --work-tree=c/b status
 527
 528-c <name>=<value>::
 529        Pass a configuration parameter to the command. The value
 530        given will override values from configuration files.
 531        The <name> is expected in the same format as listed by
 532        'git config' (subkeys separated by dots).
 533+
 534Note that omitting the `=` in `git -c foo.bar ...` is allowed and sets
 535`foo.bar` to the boolean true value (just like `[foo]bar` would in a
 536config file). Including the equals but with an empty value (like `git -c
 537foo.bar= ...`) sets `foo.bar` to the empty string.
 538
 539--exec-path[=<path>]::
 540        Path to wherever your core Git programs are installed.
 541        This can also be controlled by setting the GIT_EXEC_PATH
 542        environment variable. If no path is given, 'git' will print
 543        the current setting and then exit.
 544
 545--html-path::
 546        Print the path, without trailing slash, where Git's HTML
 547        documentation is installed and exit.
 548
 549--man-path::
 550        Print the manpath (see `man(1)`) for the man pages for
 551        this version of Git and exit.
 552
 553--info-path::
 554        Print the path where the Info files documenting this
 555        version of Git are installed and exit.
 556
 557-p::
 558--paginate::
 559        Pipe all output into 'less' (or if set, $PAGER) if standard
 560        output is a terminal.  This overrides the `pager.<cmd>`
 561        configuration options (see the "Configuration Mechanism" section
 562        below).
 563
 564--no-pager::
 565        Do not pipe Git output into a pager.
 566
 567--git-dir=<path>::
 568        Set the path to the repository. This can also be controlled by
 569        setting the GIT_DIR environment variable. It can be an absolute
 570        path or relative path to current working directory.
 571
 572--work-tree=<path>::
 573        Set the path to the working tree. It can be an absolute path
 574        or a path relative to the current working directory.
 575        This can also be controlled by setting the GIT_WORK_TREE
 576        environment variable and the core.worktree configuration
 577        variable (see core.worktree in linkgit:git-config[1] for a
 578        more detailed discussion).
 579
 580--namespace=<path>::
 581        Set the Git namespace.  See linkgit:gitnamespaces[7] for more
 582        details.  Equivalent to setting the `GIT_NAMESPACE` environment
 583        variable.
 584
 585--bare::
 586        Treat the repository as a bare repository.  If GIT_DIR
 587        environment is not set, it is set to the current working
 588        directory.
 589
 590--no-replace-objects::
 591        Do not use replacement refs to replace Git objects. See
 592        linkgit:git-replace[1] for more information.
 593
 594--literal-pathspecs::
 595        Treat pathspecs literally (i.e. no globbing, no pathspec magic).
 596        This is equivalent to setting the `GIT_LITERAL_PATHSPECS` environment
 597        variable to `1`.
 598
 599--glob-pathspecs::
 600        Add "glob" magic to all pathspec. This is equivalent to setting
 601        the `GIT_GLOB_PATHSPECS` environment variable to `1`. Disabling
 602        globbing on individual pathspecs can be done using pathspec
 603        magic ":(literal)"
 604
 605--noglob-pathspecs::
 606        Add "literal" magic to all pathspec. This is equivalent to setting
 607        the `GIT_NOGLOB_PATHSPECS` environment variable to `1`. Enabling
 608        globbing on individual pathspecs can be done using pathspec
 609        magic ":(glob)"
 610
 611--icase-pathspecs::
 612        Add "icase" magic to all pathspec. This is equivalent to setting
 613        the `GIT_ICASE_PATHSPECS` environment variable to `1`.
 614
 615GIT COMMANDS
 616------------
 617
 618We divide Git into high level ("porcelain") commands and low level
 619("plumbing") commands.
 620
 621High-level commands (porcelain)
 622-------------------------------
 623
 624We separate the porcelain commands into the main commands and some
 625ancillary user utilities.
 626
 627Main porcelain commands
 628~~~~~~~~~~~~~~~~~~~~~~~
 629
 630include::cmds-mainporcelain.txt[]
 631
 632Ancillary Commands
 633~~~~~~~~~~~~~~~~~~
 634Manipulators:
 635
 636include::cmds-ancillarymanipulators.txt[]
 637
 638Interrogators:
 639
 640include::cmds-ancillaryinterrogators.txt[]
 641
 642
 643Interacting with Others
 644~~~~~~~~~~~~~~~~~~~~~~~
 645
 646These commands are to interact with foreign SCM and with other
 647people via patch over e-mail.
 648
 649include::cmds-foreignscminterface.txt[]
 650
 651
 652Low-level commands (plumbing)
 653-----------------------------
 654
 655Although Git includes its
 656own porcelain layer, its low-level commands are sufficient to support
 657development of alternative porcelains.  Developers of such porcelains
 658might start by reading about linkgit:git-update-index[1] and
 659linkgit:git-read-tree[1].
 660
 661The interface (input, output, set of options and the semantics)
 662to these low-level commands are meant to be a lot more stable
 663than Porcelain level commands, because these commands are
 664primarily for scripted use.  The interface to Porcelain commands
 665on the other hand are subject to change in order to improve the
 666end user experience.
 667
 668The following description divides
 669the low-level commands into commands that manipulate objects (in
 670the repository, index, and working tree), commands that interrogate and
 671compare objects, and commands that move objects and references between
 672repositories.
 673
 674
 675Manipulation commands
 676~~~~~~~~~~~~~~~~~~~~~
 677
 678include::cmds-plumbingmanipulators.txt[]
 679
 680
 681Interrogation commands
 682~~~~~~~~~~~~~~~~~~~~~~
 683
 684include::cmds-plumbinginterrogators.txt[]
 685
 686In general, the interrogate commands do not touch the files in
 687the working tree.
 688
 689
 690Synching repositories
 691~~~~~~~~~~~~~~~~~~~~~
 692
 693include::cmds-synchingrepositories.txt[]
 694
 695The following are helper commands used by the above; end users
 696typically do not use them directly.
 697
 698include::cmds-synchelpers.txt[]
 699
 700
 701Internal helper commands
 702~~~~~~~~~~~~~~~~~~~~~~~~
 703
 704These are internal helper commands used by other commands; end
 705users typically do not use them directly.
 706
 707include::cmds-purehelpers.txt[]
 708
 709
 710Configuration Mechanism
 711-----------------------
 712
 713Git uses a simple text format to store customizations that are per
 714repository and are per user.  Such a configuration file may look
 715like this:
 716
 717------------
 718#
 719# A '#' or ';' character indicates a comment.
 720#
 721
 722; core variables
 723[core]
 724        ; Don't trust file modes
 725        filemode = false
 726
 727; user identity
 728[user]
 729        name = "Junio C Hamano"
 730        email = "gitster@pobox.com"
 731
 732------------
 733
 734Various commands read from the configuration file and adjust
 735their operation accordingly.  See linkgit:git-config[1] for a
 736list and more details about the configuration mechanism.
 737
 738
 739Identifier Terminology
 740----------------------
 741<object>::
 742        Indicates the object name for any type of object.
 743
 744<blob>::
 745        Indicates a blob object name.
 746
 747<tree>::
 748        Indicates a tree object name.
 749
 750<commit>::
 751        Indicates a commit object name.
 752
 753<tree-ish>::
 754        Indicates a tree, commit or tag object name.  A
 755        command that takes a <tree-ish> argument ultimately wants to
 756        operate on a <tree> object but automatically dereferences
 757        <commit> and <tag> objects that point at a <tree>.
 758
 759<commit-ish>::
 760        Indicates a commit or tag object name.  A
 761        command that takes a <commit-ish> argument ultimately wants to
 762        operate on a <commit> object but automatically dereferences
 763        <tag> objects that point at a <commit>.
 764
 765<type>::
 766        Indicates that an object type is required.
 767        Currently one of: `blob`, `tree`, `commit`, or `tag`.
 768
 769<file>::
 770        Indicates a filename - almost always relative to the
 771        root of the tree structure `GIT_INDEX_FILE` describes.
 772
 773Symbolic Identifiers
 774--------------------
 775Any Git command accepting any <object> can also use the following
 776symbolic notation:
 777
 778HEAD::
 779        indicates the head of the current branch.
 780
 781<tag>::
 782        a valid tag 'name'
 783        (i.e. a `refs/tags/<tag>` reference).
 784
 785<head>::
 786        a valid head 'name'
 787        (i.e. a `refs/heads/<head>` reference).
 788
 789For a more complete list of ways to spell object names, see
 790"SPECIFYING REVISIONS" section in linkgit:gitrevisions[7].
 791
 792
 793File/Directory Structure
 794------------------------
 795
 796Please see the linkgit:gitrepository-layout[5] document.
 797
 798Read linkgit:githooks[5] for more details about each hook.
 799
 800Higher level SCMs may provide and manage additional information in the
 801`$GIT_DIR`.
 802
 803
 804Terminology
 805-----------
 806Please see linkgit:gitglossary[7].
 807
 808
 809Environment Variables
 810---------------------
 811Various Git commands use the following environment variables:
 812
 813The Git Repository
 814~~~~~~~~~~~~~~~~~~
 815These environment variables apply to 'all' core Git commands. Nb: it
 816is worth noting that they may be used/overridden by SCMS sitting above
 817Git so take care if using a foreign front-end.
 818
 819'GIT_INDEX_FILE'::
 820        This environment allows the specification of an alternate
 821        index file. If not specified, the default of `$GIT_DIR/index`
 822        is used.
 823
 824'GIT_INDEX_VERSION'::
 825        This environment variable allows the specification of an index
 826        version for new repositories.  It won't affect existing index
 827        files.  By default index file version 2 or 3 is used. See
 828        linkgit:git-update-index[1] for more information.
 829
 830'GIT_OBJECT_DIRECTORY'::
 831        If the object storage directory is specified via this
 832        environment variable then the sha1 directories are created
 833        underneath - otherwise the default `$GIT_DIR/objects`
 834        directory is used.
 835
 836'GIT_ALTERNATE_OBJECT_DIRECTORIES'::
 837        Due to the immutable nature of Git objects, old objects can be
 838        archived into shared, read-only directories. This variable
 839        specifies a ":" separated (on Windows ";" separated) list
 840        of Git object directories which can be used to search for Git
 841        objects. New objects will not be written to these directories.
 842
 843'GIT_DIR'::
 844        If the 'GIT_DIR' environment variable is set then it
 845        specifies a path to use instead of the default `.git`
 846        for the base of the repository.
 847        The '--git-dir' command-line option also sets this value.
 848
 849'GIT_WORK_TREE'::
 850        Set the path to the root of the working tree.
 851        This can also be controlled by the '--work-tree' command-line
 852        option and the core.worktree configuration variable.
 853
 854'GIT_NAMESPACE'::
 855        Set the Git namespace; see linkgit:gitnamespaces[7] for details.
 856        The '--namespace' command-line option also sets this value.
 857
 858'GIT_CEILING_DIRECTORIES'::
 859        This should be a colon-separated list of absolute paths.  If
 860        set, it is a list of directories that Git should not chdir up
 861        into while looking for a repository directory (useful for
 862        excluding slow-loading network directories).  It will not
 863        exclude the current working directory or a GIT_DIR set on the
 864        command line or in the environment.  Normally, Git has to read
 865        the entries in this list and resolve any symlink that
 866        might be present in order to compare them with the current
 867        directory.  However, if even this access is slow, you
 868        can add an empty entry to the list to tell Git that the
 869        subsequent entries are not symlinks and needn't be resolved;
 870        e.g.,
 871        'GIT_CEILING_DIRECTORIES=/maybe/symlink::/very/slow/non/symlink'.
 872
 873'GIT_DISCOVERY_ACROSS_FILESYSTEM'::
 874        When run in a directory that does not have ".git" repository
 875        directory, Git tries to find such a directory in the parent
 876        directories to find the top of the working tree, but by default it
 877        does not cross filesystem boundaries.  This environment variable
 878        can be set to true to tell Git not to stop at filesystem
 879        boundaries.  Like 'GIT_CEILING_DIRECTORIES', this will not affect
 880        an explicit repository directory set via 'GIT_DIR' or on the
 881        command line.
 882
 883'GIT_COMMON_DIR'::
 884        If this variable is set to a path, non-worktree files that are
 885        normally in $GIT_DIR will be taken from this path
 886        instead. Worktree-specific files such as HEAD or index are
 887        taken from $GIT_DIR. See linkgit:gitrepository-layout[5] and
 888        linkgit:git-worktree[1] for
 889        details. This variable has lower precedence than other path
 890        variables such as GIT_INDEX_FILE, GIT_OBJECT_DIRECTORY...
 891
 892Git Commits
 893~~~~~~~~~~~
 894'GIT_AUTHOR_NAME'::
 895'GIT_AUTHOR_EMAIL'::
 896'GIT_AUTHOR_DATE'::
 897'GIT_COMMITTER_NAME'::
 898'GIT_COMMITTER_EMAIL'::
 899'GIT_COMMITTER_DATE'::
 900'EMAIL'::
 901        see linkgit:git-commit-tree[1]
 902
 903Git Diffs
 904~~~~~~~~~
 905'GIT_DIFF_OPTS'::
 906        Only valid setting is "--unified=??" or "-u??" to set the
 907        number of context lines shown when a unified diff is created.
 908        This takes precedence over any "-U" or "--unified" option
 909        value passed on the Git diff command line.
 910
 911'GIT_EXTERNAL_DIFF'::
 912        When the environment variable 'GIT_EXTERNAL_DIFF' is set, the
 913        program named by it is called, instead of the diff invocation
 914        described above.  For a path that is added, removed, or modified,
 915        'GIT_EXTERNAL_DIFF' is called with 7 parameters:
 916
 917        path old-file old-hex old-mode new-file new-hex new-mode
 918+
 919where:
 920
 921        <old|new>-file:: are files GIT_EXTERNAL_DIFF can use to read the
 922                         contents of <old|new>,
 923        <old|new>-hex:: are the 40-hexdigit SHA-1 hashes,
 924        <old|new>-mode:: are the octal representation of the file modes.
 925+
 926The file parameters can point at the user's working file
 927(e.g. `new-file` in "git-diff-files"), `/dev/null` (e.g. `old-file`
 928when a new file is added), or a temporary file (e.g. `old-file` in the
 929index).  'GIT_EXTERNAL_DIFF' should not worry about unlinking the
 930temporary file --- it is removed when 'GIT_EXTERNAL_DIFF' exits.
 931+
 932For a path that is unmerged, 'GIT_EXTERNAL_DIFF' is called with 1
 933parameter, <path>.
 934+
 935For each path 'GIT_EXTERNAL_DIFF' is called, two environment variables,
 936'GIT_DIFF_PATH_COUNTER' and 'GIT_DIFF_PATH_TOTAL' are set.
 937
 938'GIT_DIFF_PATH_COUNTER'::
 939        A 1-based counter incremented by one for every path.
 940
 941'GIT_DIFF_PATH_TOTAL'::
 942        The total number of paths.
 943
 944other
 945~~~~~
 946'GIT_MERGE_VERBOSITY'::
 947        A number controlling the amount of output shown by
 948        the recursive merge strategy.  Overrides merge.verbosity.
 949        See linkgit:git-merge[1]
 950
 951'GIT_PAGER'::
 952        This environment variable overrides `$PAGER`. If it is set
 953        to an empty string or to the value "cat", Git will not launch
 954        a pager.  See also the `core.pager` option in
 955        linkgit:git-config[1].
 956
 957'GIT_EDITOR'::
 958        This environment variable overrides `$EDITOR` and `$VISUAL`.
 959        It is used by several Git commands when, on interactive mode,
 960        an editor is to be launched. See also linkgit:git-var[1]
 961        and the `core.editor` option in linkgit:git-config[1].
 962
 963'GIT_SSH'::
 964'GIT_SSH_COMMAND'::
 965        If either of these environment variables is set then 'git fetch'
 966        and 'git push' will use the specified command instead of 'ssh'
 967        when they need to connect to a remote system.
 968        The command will be given exactly two or four arguments: the
 969        'username@host' (or just 'host') from the URL and the shell
 970        command to execute on that remote system, optionally preceded by
 971        '-p' (literally) and the 'port' from the URL when it specifies
 972        something other than the default SSH port.
 973+
 974`$GIT_SSH_COMMAND` takes precedence over `$GIT_SSH`, and is interpreted
 975by the shell, which allows additional arguments to be included.
 976`$GIT_SSH` on the other hand must be just the path to a program
 977(which can be a wrapper shell script, if additional arguments are
 978needed).
 979+
 980Usually it is easier to configure any desired options through your
 981personal `.ssh/config` file.  Please consult your ssh documentation
 982for further details.
 983
 984'GIT_ASKPASS'::
 985        If this environment variable is set, then Git commands which need to
 986        acquire passwords or passphrases (e.g. for HTTP or IMAP authentication)
 987        will call this program with a suitable prompt as command-line argument
 988        and read the password from its STDOUT. See also the 'core.askPass'
 989        option in linkgit:git-config[1].
 990
 991'GIT_TERMINAL_PROMPT'::
 992        If this environment variable is set to `0`, git will not prompt
 993        on the terminal (e.g., when asking for HTTP authentication).
 994
 995'GIT_CONFIG_NOSYSTEM'::
 996        Whether to skip reading settings from the system-wide
 997        `$(prefix)/etc/gitconfig` file.  This environment variable can
 998        be used along with `$HOME` and `$XDG_CONFIG_HOME` to create a
 999        predictable environment for a picky script, or you can set it
1000        temporarily to avoid using a buggy `/etc/gitconfig` file while
1001        waiting for someone with sufficient permissions to fix it.
1002
1003'GIT_FLUSH'::
1004        If this environment variable is set to "1", then commands such
1005        as 'git blame' (in incremental mode), 'git rev-list', 'git log',
1006        'git check-attr' and 'git check-ignore' will
1007        force a flush of the output stream after each record have been
1008        flushed. If this
1009        variable is set to "0", the output of these commands will be done
1010        using completely buffered I/O.   If this environment variable is
1011        not set, Git will choose buffered or record-oriented flushing
1012        based on whether stdout appears to be redirected to a file or not.
1013
1014'GIT_TRACE'::
1015        Enables general trace messages, e.g. alias expansion, built-in
1016        command execution and external command execution.
1017+
1018If this variable is set to "1", "2" or "true" (comparison
1019is case insensitive), trace messages will be printed to
1020stderr.
1021+
1022If the variable is set to an integer value greater than 2
1023and lower than 10 (strictly) then Git will interpret this
1024value as an open file descriptor and will try to write the
1025trace messages into this file descriptor.
1026+
1027Alternatively, if the variable is set to an absolute path
1028(starting with a '/' character), Git will interpret this
1029as a file path and will try to write the trace messages
1030into it.
1031+
1032Unsetting the variable, or setting it to empty, "0" or
1033"false" (case insensitive) disables trace messages.
1034
1035'GIT_TRACE_PACK_ACCESS'::
1036        Enables trace messages for all accesses to any packs. For each
1037        access, the pack file name and an offset in the pack is
1038        recorded. This may be helpful for troubleshooting some
1039        pack-related performance problems.
1040        See 'GIT_TRACE' for available trace output options.
1041
1042'GIT_TRACE_PACKET'::
1043        Enables trace messages for all packets coming in or out of a
1044        given program. This can help with debugging object negotiation
1045        or other protocol issues. Tracing is turned off at a packet
1046        starting with "PACK" (but see 'GIT_TRACE_PACKFILE' below).
1047        See 'GIT_TRACE' for available trace output options.
1048
1049'GIT_TRACE_PACKFILE'::
1050        Enables tracing of packfiles sent or received by a
1051        given program. Unlike other trace output, this trace is
1052        verbatim: no headers, and no quoting of binary data. You almost
1053        certainly want to direct into a file (e.g.,
1054        `GIT_TRACE_PACKFILE=/tmp/my.pack`) rather than displaying it on
1055        the terminal or mixing it with other trace output.
1056+
1057Note that this is currently only implemented for the client side
1058of clones and fetches.
1059
1060'GIT_TRACE_PERFORMANCE'::
1061        Enables performance related trace messages, e.g. total execution
1062        time of each Git command.
1063        See 'GIT_TRACE' for available trace output options.
1064
1065'GIT_TRACE_SETUP'::
1066        Enables trace messages printing the .git, working tree and current
1067        working directory after Git has completed its setup phase.
1068        See 'GIT_TRACE' for available trace output options.
1069
1070'GIT_TRACE_SHALLOW'::
1071        Enables trace messages that can help debugging fetching /
1072        cloning of shallow repositories.
1073        See 'GIT_TRACE' for available trace output options.
1074
1075'GIT_LITERAL_PATHSPECS'::
1076        Setting this variable to `1` will cause Git to treat all
1077        pathspecs literally, rather than as glob patterns. For example,
1078        running `GIT_LITERAL_PATHSPECS=1 git log -- '*.c'` will search
1079        for commits that touch the path `*.c`, not any paths that the
1080        glob `*.c` matches. You might want this if you are feeding
1081        literal paths to Git (e.g., paths previously given to you by
1082        `git ls-tree`, `--raw` diff output, etc).
1083
1084'GIT_GLOB_PATHSPECS'::
1085        Setting this variable to `1` will cause Git to treat all
1086        pathspecs as glob patterns (aka "glob" magic).
1087
1088'GIT_NOGLOB_PATHSPECS'::
1089        Setting this variable to `1` will cause Git to treat all
1090        pathspecs as literal (aka "literal" magic).
1091
1092'GIT_ICASE_PATHSPECS'::
1093        Setting this variable to `1` will cause Git to treat all
1094        pathspecs as case-insensitive.
1095
1096'GIT_REFLOG_ACTION'::
1097        When a ref is updated, reflog entries are created to keep
1098        track of the reason why the ref was updated (which is
1099        typically the name of the high-level command that updated
1100        the ref), in addition to the old and new values of the ref.
1101        A scripted Porcelain command can use set_reflog_action
1102        helper function in `git-sh-setup` to set its name to this
1103        variable when it is invoked as the top level command by the
1104        end user, to be recorded in the body of the reflog.
1105
1106'GIT_REF_PARANOIA'::
1107        If set to `1`, include broken or badly named refs when iterating
1108        over lists of refs. In a normal, non-corrupted repository, this
1109        does nothing. However, enabling it may help git to detect and
1110        abort some operations in the presence of broken refs. Git sets
1111        this variable automatically when performing destructive
1112        operations like linkgit:git-prune[1]. You should not need to set
1113        it yourself unless you want to be paranoid about making sure
1114        an operation has touched every ref (e.g., because you are
1115        cloning a repository to make a backup).
1116
1117'GIT_ALLOW_PROTOCOL'::
1118        If set, provide a colon-separated list of protocols which are
1119        allowed to be used with fetch/push/clone. This is useful to
1120        restrict recursive submodule initialization from an untrusted
1121        repository. Any protocol not mentioned will be disallowed (i.e.,
1122        this is a whitelist, not a blacklist). If the variable is not
1123        set at all, all protocols are enabled.  The protocol names
1124        currently used by git are:
1125
1126          - `file`: any local file-based path (including `file://` URLs,
1127            or local paths)
1128
1129          - `git`: the anonymous git protocol over a direct TCP
1130            connection (or proxy, if configured)
1131
1132          - `ssh`: git over ssh (including `host:path` syntax,
1133            `git+ssh://`, etc).
1134
1135          - `rsync`: git over rsync
1136
1137          - `http`: git over http, both "smart http" and "dumb http".
1138            Note that this does _not_ include `https`; if you want both,
1139            you should specify both as `http:https`.
1140
1141          - any external helpers are named by their protocol (e.g., use
1142            `hg` to allow the `git-remote-hg` helper)
1143
1144
1145Discussion[[Discussion]]
1146------------------------
1147
1148More detail on the following is available from the
1149link:user-manual.html#git-concepts[Git concepts chapter of the
1150user-manual] and linkgit:gitcore-tutorial[7].
1151
1152A Git project normally consists of a working directory with a ".git"
1153subdirectory at the top level.  The .git directory contains, among other
1154things, a compressed object database representing the complete history
1155of the project, an "index" file which links that history to the current
1156contents of the working tree, and named pointers into that history such
1157as tags and branch heads.
1158
1159The object database contains objects of three main types: blobs, which
1160hold file data; trees, which point to blobs and other trees to build up
1161directory hierarchies; and commits, which each reference a single tree
1162and some number of parent commits.
1163
1164The commit, equivalent to what other systems call a "changeset" or
1165"version", represents a step in the project's history, and each parent
1166represents an immediately preceding step.  Commits with more than one
1167parent represent merges of independent lines of development.
1168
1169All objects are named by the SHA-1 hash of their contents, normally
1170written as a string of 40 hex digits.  Such names are globally unique.
1171The entire history leading up to a commit can be vouched for by signing
1172just that commit.  A fourth object type, the tag, is provided for this
1173purpose.
1174
1175When first created, objects are stored in individual files, but for
1176efficiency may later be compressed together into "pack files".
1177
1178Named pointers called refs mark interesting points in history.  A ref
1179may contain the SHA-1 name of an object or the name of another ref.  Refs
1180with names beginning `ref/head/` contain the SHA-1 name of the most
1181recent commit (or "head") of a branch under development.  SHA-1 names of
1182tags of interest are stored under `ref/tags/`.  A special ref named
1183`HEAD` contains the name of the currently checked-out branch.
1184
1185The index file is initialized with a list of all paths and, for each
1186path, a blob object and a set of attributes.  The blob object represents
1187the contents of the file as of the head of the current branch.  The
1188attributes (last modified time, size, etc.) are taken from the
1189corresponding file in the working tree.  Subsequent changes to the
1190working tree can be found by comparing these attributes.  The index may
1191be updated with new content, and new commits may be created from the
1192content stored in the index.
1193
1194The index is also capable of storing multiple entries (called "stages")
1195for a given pathname.  These stages are used to hold the various
1196unmerged version of a file when a merge is in progress.
1197
1198FURTHER DOCUMENTATION
1199---------------------
1200
1201See the references in the "description" section to get started
1202using Git.  The following is probably more detail than necessary
1203for a first-time user.
1204
1205The link:user-manual.html#git-concepts[Git concepts chapter of the
1206user-manual] and linkgit:gitcore-tutorial[7] both provide
1207introductions to the underlying Git architecture.
1208
1209See linkgit:gitworkflows[7] for an overview of recommended workflows.
1210
1211See also the link:howto-index.html[howto] documents for some useful
1212examples.
1213
1214The internals are documented in the
1215link:technical/api-index.html[Git API documentation].
1216
1217Users migrating from CVS may also want to
1218read linkgit:gitcvs-migration[7].
1219
1220
1221Authors
1222-------
1223Git was started by Linus Torvalds, and is currently maintained by Junio
1224C Hamano. Numerous contributions have come from the Git mailing list
1225<git@vger.kernel.org>.  http://www.openhub.net/p/git/contributors/summary
1226gives you a more complete list of contributors.
1227
1228If you have a clone of git.git itself, the
1229output of linkgit:git-shortlog[1] and linkgit:git-blame[1] can show you
1230the authors for specific parts of the project.
1231
1232Reporting Bugs
1233--------------
1234
1235Report bugs to the Git mailing list <git@vger.kernel.org> where the
1236development and maintenance is primarily done.  You do not have to be
1237subscribed to the list to send a message there.
1238
1239SEE ALSO
1240--------
1241linkgit:gittutorial[7], linkgit:gittutorial-2[7],
1242linkgit:giteveryday[7], linkgit:gitcvs-migration[7],
1243linkgit:gitglossary[7], linkgit:gitcore-tutorial[7],
1244linkgit:gitcli[7], link:user-manual.html[The Git User's Manual],
1245linkgit:gitworkflows[7]
1246
1247GIT
1248---
1249Part of the linkgit:git[1] suite