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 34A formatted and hyperlinked copy of the latest Git documentation 35can be viewed at `https://git.github.io/htmldocs/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:v2.9.3/git.html[documentation for release 2.9.3] 47 48* release notes for 49 link:RelNotes/2.9.3.txt[2.9.3], 50 link:RelNotes/2.9.2.txt[2.9.2], 51 link:RelNotes/2.9.1.txt[2.9.1], 52 link:RelNotes/2.9.0.txt[2.9]. 53 54* link:v2.8.4/git.html[documentation for release 2.8.4] 55 56* release notes for 57 link:RelNotes/2.8.4.txt[2.8.4], 58 link:RelNotes/2.8.3.txt[2.8.3], 59 link:RelNotes/2.8.2.txt[2.8.2], 60 link:RelNotes/2.8.1.txt[2.8.1], 61 link:RelNotes/2.8.0.txt[2.8]. 62 63* link:v2.7.3/git.html[documentation for release 2.7.3] 64 65* release notes for 66 link:RelNotes/2.7.3.txt[2.7.3], 67 link:RelNotes/2.7.2.txt[2.7.2], 68 link:RelNotes/2.7.1.txt[2.7.1], 69 link:RelNotes/2.7.0.txt[2.7]. 70 71* link:v2.6.6/git.html[documentation for release 2.6.6] 72 73* release notes for 74 link:RelNotes/2.6.6.txt[2.6.6], 75 link:RelNotes/2.6.5.txt[2.6.5], 76 link:RelNotes/2.6.4.txt[2.6.4], 77 link:RelNotes/2.6.3.txt[2.6.3], 78 link:RelNotes/2.6.2.txt[2.6.2], 79 link:RelNotes/2.6.1.txt[2.6.1], 80 link:RelNotes/2.6.0.txt[2.6]. 81 82* link:v2.5.5/git.html[documentation for release 2.5.5] 83 84* release notes for 85 link:RelNotes/2.5.5.txt[2.5.5], 86 link:RelNotes/2.5.4.txt[2.5.4], 87 link:RelNotes/2.5.3.txt[2.5.3], 88 link:RelNotes/2.5.2.txt[2.5.2], 89 link:RelNotes/2.5.1.txt[2.5.1], 90 link:RelNotes/2.5.0.txt[2.5]. 91 92* link:v2.4.11/git.html[documentation for release 2.4.11] 93 94* release notes for 95 link:RelNotes/2.4.11.txt[2.4.11], 96 link:RelNotes/2.4.10.txt[2.4.10], 97 link:RelNotes/2.4.9.txt[2.4.9], 98 link:RelNotes/2.4.8.txt[2.4.8], 99 link:RelNotes/2.4.7.txt[2.4.7], 100 link:RelNotes/2.4.6.txt[2.4.6], 101 link:RelNotes/2.4.5.txt[2.4.5], 102 link:RelNotes/2.4.4.txt[2.4.4], 103 link:RelNotes/2.4.3.txt[2.4.3], 104 link:RelNotes/2.4.2.txt[2.4.2], 105 link:RelNotes/2.4.1.txt[2.4.1], 106 link:RelNotes/2.4.0.txt[2.4]. 107 108* link:v2.3.10/git.html[documentation for release 2.3.10] 109 110* release notes for 111 link:RelNotes/2.3.10.txt[2.3.10], 112 link:RelNotes/2.3.9.txt[2.3.9], 113 link:RelNotes/2.3.8.txt[2.3.8], 114 link:RelNotes/2.3.7.txt[2.3.7], 115 link:RelNotes/2.3.6.txt[2.3.6], 116 link:RelNotes/2.3.5.txt[2.3.5], 117 link:RelNotes/2.3.4.txt[2.3.4], 118 link:RelNotes/2.3.3.txt[2.3.3], 119 link:RelNotes/2.3.2.txt[2.3.2], 120 link:RelNotes/2.3.1.txt[2.3.1], 121 link:RelNotes/2.3.0.txt[2.3]. 122 123* link:v2.2.3/git.html[documentation for release 2.2.3] 124 125* release notes for 126 link:RelNotes/2.2.3.txt[2.2.3], 127 link:RelNotes/2.2.2.txt[2.2.2], 128 link:RelNotes/2.2.1.txt[2.2.1], 129 link:RelNotes/2.2.0.txt[2.2]. 130 131* link:v2.1.4/git.html[documentation for release 2.1.4] 132 133* release notes for 134 link:RelNotes/2.1.4.txt[2.1.4], 135 link:RelNotes/2.1.3.txt[2.1.3], 136 link:RelNotes/2.1.2.txt[2.1.2], 137 link:RelNotes/2.1.1.txt[2.1.1], 138 link:RelNotes/2.1.0.txt[2.1]. 139 140* link:v2.0.5/git.html[documentation for release 2.0.5] 141 142* release notes for 143 link:RelNotes/2.0.5.txt[2.0.5], 144 link:RelNotes/2.0.4.txt[2.0.4], 145 link:RelNotes/2.0.3.txt[2.0.3], 146 link:RelNotes/2.0.2.txt[2.0.2], 147 link:RelNotes/2.0.1.txt[2.0.1], 148 link:RelNotes/2.0.0.txt[2.0.0]. 149 150* link:v1.9.5/git.html[documentation for release 1.9.5] 151 152* release notes for 153 link:RelNotes/1.9.5.txt[1.9.5], 154 link:RelNotes/1.9.4.txt[1.9.4], 155 link:RelNotes/1.9.3.txt[1.9.3], 156 link:RelNotes/1.9.2.txt[1.9.2], 157 link:RelNotes/1.9.1.txt[1.9.1], 158 link:RelNotes/1.9.0.txt[1.9.0]. 159 160* link:v1.8.5.6/git.html[documentation for release 1.8.5.6] 161 162* release notes for 163 link:RelNotes/1.8.5.6.txt[1.8.5.6], 164 link:RelNotes/1.8.5.5.txt[1.8.5.5], 165 link:RelNotes/1.8.5.4.txt[1.8.5.4], 166 link:RelNotes/1.8.5.3.txt[1.8.5.3], 167 link:RelNotes/1.8.5.2.txt[1.8.5.2], 168 link:RelNotes/1.8.5.1.txt[1.8.5.1], 169 link:RelNotes/1.8.5.txt[1.8.5]. 170 171* link:v1.8.4.5/git.html[documentation for release 1.8.4.5] 172 173* release notes for 174 link:RelNotes/1.8.4.5.txt[1.8.4.5], 175 link:RelNotes/1.8.4.4.txt[1.8.4.4], 176 link:RelNotes/1.8.4.3.txt[1.8.4.3], 177 link:RelNotes/1.8.4.2.txt[1.8.4.2], 178 link:RelNotes/1.8.4.1.txt[1.8.4.1], 179 link:RelNotes/1.8.4.txt[1.8.4]. 180 181* link:v1.8.3.4/git.html[documentation for release 1.8.3.4] 182 183* release notes for 184 link:RelNotes/1.8.3.4.txt[1.8.3.4], 185 link:RelNotes/1.8.3.3.txt[1.8.3.3], 186 link:RelNotes/1.8.3.2.txt[1.8.3.2], 187 link:RelNotes/1.8.3.1.txt[1.8.3.1], 188 link:RelNotes/1.8.3.txt[1.8.3]. 189 190* link:v1.8.2.3/git.html[documentation for release 1.8.2.3] 191 192* release notes for 193 link:RelNotes/1.8.2.3.txt[1.8.2.3], 194 link:RelNotes/1.8.2.2.txt[1.8.2.2], 195 link:RelNotes/1.8.2.1.txt[1.8.2.1], 196 link:RelNotes/1.8.2.txt[1.8.2]. 197 198* link:v1.8.1.6/git.html[documentation for release 1.8.1.6] 199 200* release notes for 201 link:RelNotes/1.8.1.6.txt[1.8.1.6], 202 link:RelNotes/1.8.1.5.txt[1.8.1.5], 203 link:RelNotes/1.8.1.4.txt[1.8.1.4], 204 link:RelNotes/1.8.1.3.txt[1.8.1.3], 205 link:RelNotes/1.8.1.2.txt[1.8.1.2], 206 link:RelNotes/1.8.1.1.txt[1.8.1.1], 207 link:RelNotes/1.8.1.txt[1.8.1]. 208 209* link:v1.8.0.3/git.html[documentation for release 1.8.0.3] 210 211* release notes for 212 link:RelNotes/1.8.0.3.txt[1.8.0.3], 213 link:RelNotes/1.8.0.2.txt[1.8.0.2], 214 link:RelNotes/1.8.0.1.txt[1.8.0.1], 215 link:RelNotes/1.8.0.txt[1.8.0]. 216 217* link:v1.7.12.4/git.html[documentation for release 1.7.12.4] 218 219* release notes for 220 link:RelNotes/1.7.12.4.txt[1.7.12.4], 221 link:RelNotes/1.7.12.3.txt[1.7.12.3], 222 link:RelNotes/1.7.12.2.txt[1.7.12.2], 223 link:RelNotes/1.7.12.1.txt[1.7.12.1], 224 link:RelNotes/1.7.12.txt[1.7.12]. 225 226* link:v1.7.11.7/git.html[documentation for release 1.7.11.7] 227 228* release notes for 229 link:RelNotes/1.7.11.7.txt[1.7.11.7], 230 link:RelNotes/1.7.11.6.txt[1.7.11.6], 231 link:RelNotes/1.7.11.5.txt[1.7.11.5], 232 link:RelNotes/1.7.11.4.txt[1.7.11.4], 233 link:RelNotes/1.7.11.3.txt[1.7.11.3], 234 link:RelNotes/1.7.11.2.txt[1.7.11.2], 235 link:RelNotes/1.7.11.1.txt[1.7.11.1], 236 link:RelNotes/1.7.11.txt[1.7.11]. 237 238* link:v1.7.10.5/git.html[documentation for release 1.7.10.5] 239 240* release notes for 241 link:RelNotes/1.7.10.5.txt[1.7.10.5], 242 link:RelNotes/1.7.10.4.txt[1.7.10.4], 243 link:RelNotes/1.7.10.3.txt[1.7.10.3], 244 link:RelNotes/1.7.10.2.txt[1.7.10.2], 245 link:RelNotes/1.7.10.1.txt[1.7.10.1], 246 link:RelNotes/1.7.10.txt[1.7.10]. 247 248* link:v1.7.9.7/git.html[documentation for release 1.7.9.7] 249 250* release notes for 251 link:RelNotes/1.7.9.7.txt[1.7.9.7], 252 link:RelNotes/1.7.9.6.txt[1.7.9.6], 253 link:RelNotes/1.7.9.5.txt[1.7.9.5], 254 link:RelNotes/1.7.9.4.txt[1.7.9.4], 255 link:RelNotes/1.7.9.3.txt[1.7.9.3], 256 link:RelNotes/1.7.9.2.txt[1.7.9.2], 257 link:RelNotes/1.7.9.1.txt[1.7.9.1], 258 link:RelNotes/1.7.9.txt[1.7.9]. 259 260* link:v1.7.8.6/git.html[documentation for release 1.7.8.6] 261 262* release notes for 263 link:RelNotes/1.7.8.6.txt[1.7.8.6], 264 link:RelNotes/1.7.8.5.txt[1.7.8.5], 265 link:RelNotes/1.7.8.4.txt[1.7.8.4], 266 link:RelNotes/1.7.8.3.txt[1.7.8.3], 267 link:RelNotes/1.7.8.2.txt[1.7.8.2], 268 link:RelNotes/1.7.8.1.txt[1.7.8.1], 269 link:RelNotes/1.7.8.txt[1.7.8]. 270 271* link:v1.7.7.7/git.html[documentation for release 1.7.7.7] 272 273* release notes for 274 link:RelNotes/1.7.7.7.txt[1.7.7.7], 275 link:RelNotes/1.7.7.6.txt[1.7.7.6], 276 link:RelNotes/1.7.7.5.txt[1.7.7.5], 277 link:RelNotes/1.7.7.4.txt[1.7.7.4], 278 link:RelNotes/1.7.7.3.txt[1.7.7.3], 279 link:RelNotes/1.7.7.2.txt[1.7.7.2], 280 link:RelNotes/1.7.7.1.txt[1.7.7.1], 281 link:RelNotes/1.7.7.txt[1.7.7]. 282 283* link:v1.7.6.6/git.html[documentation for release 1.7.6.6] 284 285* release notes for 286 link:RelNotes/1.7.6.6.txt[1.7.6.6], 287 link:RelNotes/1.7.6.5.txt[1.7.6.5], 288 link:RelNotes/1.7.6.4.txt[1.7.6.4], 289 link:RelNotes/1.7.6.3.txt[1.7.6.3], 290 link:RelNotes/1.7.6.2.txt[1.7.6.2], 291 link:RelNotes/1.7.6.1.txt[1.7.6.1], 292 link:RelNotes/1.7.6.txt[1.7.6]. 293 294* link:v1.7.5.4/git.html[documentation for release 1.7.5.4] 295 296* release notes for 297 link:RelNotes/1.7.5.4.txt[1.7.5.4], 298 link:RelNotes/1.7.5.3.txt[1.7.5.3], 299 link:RelNotes/1.7.5.2.txt[1.7.5.2], 300 link:RelNotes/1.7.5.1.txt[1.7.5.1], 301 link:RelNotes/1.7.5.txt[1.7.5]. 302 303* link:v1.7.4.5/git.html[documentation for release 1.7.4.5] 304 305* release notes for 306 link:RelNotes/1.7.4.5.txt[1.7.4.5], 307 link:RelNotes/1.7.4.4.txt[1.7.4.4], 308 link:RelNotes/1.7.4.3.txt[1.7.4.3], 309 link:RelNotes/1.7.4.2.txt[1.7.4.2], 310 link:RelNotes/1.7.4.1.txt[1.7.4.1], 311 link:RelNotes/1.7.4.txt[1.7.4]. 312 313* link:v1.7.3.5/git.html[documentation for release 1.7.3.5] 314 315* release notes for 316 link:RelNotes/1.7.3.5.txt[1.7.3.5], 317 link:RelNotes/1.7.3.4.txt[1.7.3.4], 318 link:RelNotes/1.7.3.3.txt[1.7.3.3], 319 link:RelNotes/1.7.3.2.txt[1.7.3.2], 320 link:RelNotes/1.7.3.1.txt[1.7.3.1], 321 link:RelNotes/1.7.3.txt[1.7.3]. 322 323* link:v1.7.2.5/git.html[documentation for release 1.7.2.5] 324 325* release notes for 326 link:RelNotes/1.7.2.5.txt[1.7.2.5], 327 link:RelNotes/1.7.2.4.txt[1.7.2.4], 328 link:RelNotes/1.7.2.3.txt[1.7.2.3], 329 link:RelNotes/1.7.2.2.txt[1.7.2.2], 330 link:RelNotes/1.7.2.1.txt[1.7.2.1], 331 link:RelNotes/1.7.2.txt[1.7.2]. 332 333* link:v1.7.1.4/git.html[documentation for release 1.7.1.4] 334 335* release notes for 336 link:RelNotes/1.7.1.4.txt[1.7.1.4], 337 link:RelNotes/1.7.1.3.txt[1.7.1.3], 338 link:RelNotes/1.7.1.2.txt[1.7.1.2], 339 link:RelNotes/1.7.1.1.txt[1.7.1.1], 340 link:RelNotes/1.7.1.txt[1.7.1]. 341 342* link:v1.7.0.9/git.html[documentation for release 1.7.0.9] 343 344* release notes for 345 link:RelNotes/1.7.0.9.txt[1.7.0.9], 346 link:RelNotes/1.7.0.8.txt[1.7.0.8], 347 link:RelNotes/1.7.0.7.txt[1.7.0.7], 348 link:RelNotes/1.7.0.6.txt[1.7.0.6], 349 link:RelNotes/1.7.0.5.txt[1.7.0.5], 350 link:RelNotes/1.7.0.4.txt[1.7.0.4], 351 link:RelNotes/1.7.0.3.txt[1.7.0.3], 352 link:RelNotes/1.7.0.2.txt[1.7.0.2], 353 link:RelNotes/1.7.0.1.txt[1.7.0.1], 354 link:RelNotes/1.7.0.txt[1.7.0]. 355 356* link:v1.6.6.3/git.html[documentation for release 1.6.6.3] 357 358* release notes for 359 link:RelNotes/1.6.6.3.txt[1.6.6.3], 360 link:RelNotes/1.6.6.2.txt[1.6.6.2], 361 link:RelNotes/1.6.6.1.txt[1.6.6.1], 362 link:RelNotes/1.6.6.txt[1.6.6]. 363 364* link:v1.6.5.9/git.html[documentation for release 1.6.5.9] 365 366* release notes for 367 link:RelNotes/1.6.5.9.txt[1.6.5.9], 368 link:RelNotes/1.6.5.8.txt[1.6.5.8], 369 link:RelNotes/1.6.5.7.txt[1.6.5.7], 370 link:RelNotes/1.6.5.6.txt[1.6.5.6], 371 link:RelNotes/1.6.5.5.txt[1.6.5.5], 372 link:RelNotes/1.6.5.4.txt[1.6.5.4], 373 link:RelNotes/1.6.5.3.txt[1.6.5.3], 374 link:RelNotes/1.6.5.2.txt[1.6.5.2], 375 link:RelNotes/1.6.5.1.txt[1.6.5.1], 376 link:RelNotes/1.6.5.txt[1.6.5]. 377 378* link:v1.6.4.5/git.html[documentation for release 1.6.4.5] 379 380* release notes for 381 link:RelNotes/1.6.4.5.txt[1.6.4.5], 382 link:RelNotes/1.6.4.4.txt[1.6.4.4], 383 link:RelNotes/1.6.4.3.txt[1.6.4.3], 384 link:RelNotes/1.6.4.2.txt[1.6.4.2], 385 link:RelNotes/1.6.4.1.txt[1.6.4.1], 386 link:RelNotes/1.6.4.txt[1.6.4]. 387 388* link:v1.6.3.4/git.html[documentation for release 1.6.3.4] 389 390* release notes for 391 link:RelNotes/1.6.3.4.txt[1.6.3.4], 392 link:RelNotes/1.6.3.3.txt[1.6.3.3], 393 link:RelNotes/1.6.3.2.txt[1.6.3.2], 394 link:RelNotes/1.6.3.1.txt[1.6.3.1], 395 link:RelNotes/1.6.3.txt[1.6.3]. 396 397* release notes for 398 link:RelNotes/1.6.2.5.txt[1.6.2.5], 399 link:RelNotes/1.6.2.4.txt[1.6.2.4], 400 link:RelNotes/1.6.2.3.txt[1.6.2.3], 401 link:RelNotes/1.6.2.2.txt[1.6.2.2], 402 link:RelNotes/1.6.2.1.txt[1.6.2.1], 403 link:RelNotes/1.6.2.txt[1.6.2]. 404 405* link:v1.6.1.3/git.html[documentation for release 1.6.1.3] 406 407* release notes for 408 link:RelNotes/1.6.1.3.txt[1.6.1.3], 409 link:RelNotes/1.6.1.2.txt[1.6.1.2], 410 link:RelNotes/1.6.1.1.txt[1.6.1.1], 411 link:RelNotes/1.6.1.txt[1.6.1]. 412 413* link:v1.6.0.6/git.html[documentation for release 1.6.0.6] 414 415* release notes for 416 link:RelNotes/1.6.0.6.txt[1.6.0.6], 417 link:RelNotes/1.6.0.5.txt[1.6.0.5], 418 link:RelNotes/1.6.0.4.txt[1.6.0.4], 419 link:RelNotes/1.6.0.3.txt[1.6.0.3], 420 link:RelNotes/1.6.0.2.txt[1.6.0.2], 421 link:RelNotes/1.6.0.1.txt[1.6.0.1], 422 link:RelNotes/1.6.0.txt[1.6.0]. 423 424* link:v1.5.6.6/git.html[documentation for release 1.5.6.6] 425 426* release notes for 427 link:RelNotes/1.5.6.6.txt[1.5.6.6], 428 link:RelNotes/1.5.6.5.txt[1.5.6.5], 429 link:RelNotes/1.5.6.4.txt[1.5.6.4], 430 link:RelNotes/1.5.6.3.txt[1.5.6.3], 431 link:RelNotes/1.5.6.2.txt[1.5.6.2], 432 link:RelNotes/1.5.6.1.txt[1.5.6.1], 433 link:RelNotes/1.5.6.txt[1.5.6]. 434 435* link:v1.5.5.6/git.html[documentation for release 1.5.5.6] 436 437* release notes for 438 link:RelNotes/1.5.5.6.txt[1.5.5.6], 439 link:RelNotes/1.5.5.5.txt[1.5.5.5], 440 link:RelNotes/1.5.5.4.txt[1.5.5.4], 441 link:RelNotes/1.5.5.3.txt[1.5.5.3], 442 link:RelNotes/1.5.5.2.txt[1.5.5.2], 443 link:RelNotes/1.5.5.1.txt[1.5.5.1], 444 link:RelNotes/1.5.5.txt[1.5.5]. 445 446* link:v1.5.4.7/git.html[documentation for release 1.5.4.7] 447 448* release notes for 449 link:RelNotes/1.5.4.7.txt[1.5.4.7], 450 link:RelNotes/1.5.4.6.txt[1.5.4.6], 451 link:RelNotes/1.5.4.5.txt[1.5.4.5], 452 link:RelNotes/1.5.4.4.txt[1.5.4.4], 453 link:RelNotes/1.5.4.3.txt[1.5.4.3], 454 link:RelNotes/1.5.4.2.txt[1.5.4.2], 455 link:RelNotes/1.5.4.1.txt[1.5.4.1], 456 link:RelNotes/1.5.4.txt[1.5.4]. 457 458* link:v1.5.3.8/git.html[documentation for release 1.5.3.8] 459 460* release notes for 461 link:RelNotes/1.5.3.8.txt[1.5.3.8], 462 link:RelNotes/1.5.3.7.txt[1.5.3.7], 463 link:RelNotes/1.5.3.6.txt[1.5.3.6], 464 link:RelNotes/1.5.3.5.txt[1.5.3.5], 465 link:RelNotes/1.5.3.4.txt[1.5.3.4], 466 link:RelNotes/1.5.3.3.txt[1.5.3.3], 467 link:RelNotes/1.5.3.2.txt[1.5.3.2], 468 link:RelNotes/1.5.3.1.txt[1.5.3.1], 469 link:RelNotes/1.5.3.txt[1.5.3]. 470 471* link:v1.5.2.5/git.html[documentation for release 1.5.2.5] 472 473* release notes for 474 link:RelNotes/1.5.2.5.txt[1.5.2.5], 475 link:RelNotes/1.5.2.4.txt[1.5.2.4], 476 link:RelNotes/1.5.2.3.txt[1.5.2.3], 477 link:RelNotes/1.5.2.2.txt[1.5.2.2], 478 link:RelNotes/1.5.2.1.txt[1.5.2.1], 479 link:RelNotes/1.5.2.txt[1.5.2]. 480 481* link:v1.5.1.6/git.html[documentation for release 1.5.1.6] 482 483* release notes for 484 link:RelNotes/1.5.1.6.txt[1.5.1.6], 485 link:RelNotes/1.5.1.5.txt[1.5.1.5], 486 link:RelNotes/1.5.1.4.txt[1.5.1.4], 487 link:RelNotes/1.5.1.3.txt[1.5.1.3], 488 link:RelNotes/1.5.1.2.txt[1.5.1.2], 489 link:RelNotes/1.5.1.1.txt[1.5.1.1], 490 link:RelNotes/1.5.1.txt[1.5.1]. 491 492* link:v1.5.0.7/git.html[documentation for release 1.5.0.7] 493 494* release notes for 495 link:RelNotes/1.5.0.7.txt[1.5.0.7], 496 link:RelNotes/1.5.0.6.txt[1.5.0.6], 497 link:RelNotes/1.5.0.5.txt[1.5.0.5], 498 link:RelNotes/1.5.0.3.txt[1.5.0.3], 499 link:RelNotes/1.5.0.2.txt[1.5.0.2], 500 link:RelNotes/1.5.0.1.txt[1.5.0.1], 501 link:RelNotes/1.5.0.txt[1.5.0]. 502 503* documentation for release link:v1.4.4.4/git.html[1.4.4.4], 504 link:v1.3.3/git.html[1.3.3], 505 link:v1.2.6/git.html[1.2.6], 506 link:v1.0.13/git.html[1.0.13]. 507 508============ 509 510endif::stalenotes[] 511 512OPTIONS 513------- 514--version:: 515 Prints the Git suite version that the 'git' program came from. 516 517--help:: 518 Prints the synopsis and a list of the most commonly used 519 commands. If the option `--all` or `-a` is given then all 520 available commands are printed. If a Git command is named this 521 option will bring up the manual page for that command. 522+ 523Other options are available to control how the manual page is 524displayed. See linkgit:git-help[1] for more information, 525because `git --help ...` is converted internally into `git 526help ...`. 527 528-C <path>:: 529 Run as if git was started in '<path>' instead of the current working 530 directory. When multiple `-C` options are given, each subsequent 531 non-absolute `-C <path>` is interpreted relative to the preceding `-C 532 <path>`. 533+ 534This option affects options that expect path name like `--git-dir` and 535`--work-tree` in that their interpretations of the path names would be 536made relative to the working directory caused by the `-C` option. For 537example the following invocations are equivalent: 538 539 git --git-dir=a.git --work-tree=b -C c status 540 git --git-dir=c/a.git --work-tree=c/b status 541 542-c <name>=<value>:: 543 Pass a configuration parameter to the command. The value 544 given will override values from configuration files. 545 The <name> is expected in the same format as listed by 546 'git config' (subkeys separated by dots). 547+ 548Note that omitting the `=` in `git -c foo.bar ...` is allowed and sets 549`foo.bar` to the boolean true value (just like `[foo]bar` would in a 550config file). Including the equals but with an empty value (like `git -c 551foo.bar= ...`) sets `foo.bar` to the empty string. 552 553--exec-path[=<path>]:: 554 Path to wherever your core Git programs are installed. 555 This can also be controlled by setting the GIT_EXEC_PATH 556 environment variable. If no path is given, 'git' will print 557 the current setting and then exit. 558 559--html-path:: 560 Print the path, without trailing slash, where Git's HTML 561 documentation is installed and exit. 562 563--man-path:: 564 Print the manpath (see `man(1)`) for the man pages for 565 this version of Git and exit. 566 567--info-path:: 568 Print the path where the Info files documenting this 569 version of Git are installed and exit. 570 571-p:: 572--paginate:: 573 Pipe all output into 'less' (or if set, $PAGER) if standard 574 output is a terminal. This overrides the `pager.<cmd>` 575 configuration options (see the "Configuration Mechanism" section 576 below). 577 578--no-pager:: 579 Do not pipe Git output into a pager. 580 581--git-dir=<path>:: 582 Set the path to the repository. This can also be controlled by 583 setting the `GIT_DIR` environment variable. It can be an absolute 584 path or relative path to current working directory. 585 586--work-tree=<path>:: 587 Set the path to the working tree. It can be an absolute path 588 or a path relative to the current working directory. 589 This can also be controlled by setting the GIT_WORK_TREE 590 environment variable and the core.worktree configuration 591 variable (see core.worktree in linkgit:git-config[1] for a 592 more detailed discussion). 593 594--namespace=<path>:: 595 Set the Git namespace. See linkgit:gitnamespaces[7] for more 596 details. Equivalent to setting the `GIT_NAMESPACE` environment 597 variable. 598 599--bare:: 600 Treat the repository as a bare repository. If GIT_DIR 601 environment is not set, it is set to the current working 602 directory. 603 604--no-replace-objects:: 605 Do not use replacement refs to replace Git objects. See 606 linkgit:git-replace[1] for more information. 607 608--literal-pathspecs:: 609 Treat pathspecs literally (i.e. no globbing, no pathspec magic). 610 This is equivalent to setting the `GIT_LITERAL_PATHSPECS` environment 611 variable to `1`. 612 613--glob-pathspecs:: 614 Add "glob" magic to all pathspec. This is equivalent to setting 615 the `GIT_GLOB_PATHSPECS` environment variable to `1`. Disabling 616 globbing on individual pathspecs can be done using pathspec 617 magic ":(literal)" 618 619--noglob-pathspecs:: 620 Add "literal" magic to all pathspec. This is equivalent to setting 621 the `GIT_NOGLOB_PATHSPECS` environment variable to `1`. Enabling 622 globbing on individual pathspecs can be done using pathspec 623 magic ":(glob)" 624 625--icase-pathspecs:: 626 Add "icase" magic to all pathspec. This is equivalent to setting 627 the `GIT_ICASE_PATHSPECS` environment variable to `1`. 628 629GIT COMMANDS 630------------ 631 632We divide Git into high level ("porcelain") commands and low level 633("plumbing") commands. 634 635High-level commands (porcelain) 636------------------------------- 637 638We separate the porcelain commands into the main commands and some 639ancillary user utilities. 640 641Main porcelain commands 642~~~~~~~~~~~~~~~~~~~~~~~ 643 644include::cmds-mainporcelain.txt[] 645 646Ancillary Commands 647~~~~~~~~~~~~~~~~~~ 648Manipulators: 649 650include::cmds-ancillarymanipulators.txt[] 651 652Interrogators: 653 654include::cmds-ancillaryinterrogators.txt[] 655 656 657Interacting with Others 658~~~~~~~~~~~~~~~~~~~~~~~ 659 660These commands are to interact with foreign SCM and with other 661people via patch over e-mail. 662 663include::cmds-foreignscminterface.txt[] 664 665 666Low-level commands (plumbing) 667----------------------------- 668 669Although Git includes its 670own porcelain layer, its low-level commands are sufficient to support 671development of alternative porcelains. Developers of such porcelains 672might start by reading about linkgit:git-update-index[1] and 673linkgit:git-read-tree[1]. 674 675The interface (input, output, set of options and the semantics) 676to these low-level commands are meant to be a lot more stable 677than Porcelain level commands, because these commands are 678primarily for scripted use. The interface to Porcelain commands 679on the other hand are subject to change in order to improve the 680end user experience. 681 682The following description divides 683the low-level commands into commands that manipulate objects (in 684the repository, index, and working tree), commands that interrogate and 685compare objects, and commands that move objects and references between 686repositories. 687 688 689Manipulation commands 690~~~~~~~~~~~~~~~~~~~~~ 691 692include::cmds-plumbingmanipulators.txt[] 693 694 695Interrogation commands 696~~~~~~~~~~~~~~~~~~~~~~ 697 698include::cmds-plumbinginterrogators.txt[] 699 700In general, the interrogate commands do not touch the files in 701the working tree. 702 703 704Synching repositories 705~~~~~~~~~~~~~~~~~~~~~ 706 707include::cmds-synchingrepositories.txt[] 708 709The following are helper commands used by the above; end users 710typically do not use them directly. 711 712include::cmds-synchelpers.txt[] 713 714 715Internal helper commands 716~~~~~~~~~~~~~~~~~~~~~~~~ 717 718These are internal helper commands used by other commands; end 719users typically do not use them directly. 720 721include::cmds-purehelpers.txt[] 722 723 724Configuration Mechanism 725----------------------- 726 727Git uses a simple text format to store customizations that are per 728repository and are per user. Such a configuration file may look 729like this: 730 731------------ 732# 733# A '#' or ';' character indicates a comment. 734# 735 736; core variables 737[core] 738 ; Don't trust file modes 739 filemode = false 740 741; user identity 742[user] 743 name = "Junio C Hamano" 744 email = "gitster@pobox.com" 745 746------------ 747 748Various commands read from the configuration file and adjust 749their operation accordingly. See linkgit:git-config[1] for a 750list and more details about the configuration mechanism. 751 752 753Identifier Terminology 754---------------------- 755<object>:: 756 Indicates the object name for any type of object. 757 758<blob>:: 759 Indicates a blob object name. 760 761<tree>:: 762 Indicates a tree object name. 763 764<commit>:: 765 Indicates a commit object name. 766 767<tree-ish>:: 768 Indicates a tree, commit or tag object name. A 769 command that takes a <tree-ish> argument ultimately wants to 770 operate on a <tree> object but automatically dereferences 771 <commit> and <tag> objects that point at a <tree>. 772 773<commit-ish>:: 774 Indicates a commit or tag object name. A 775 command that takes a <commit-ish> argument ultimately wants to 776 operate on a <commit> object but automatically dereferences 777 <tag> objects that point at a <commit>. 778 779<type>:: 780 Indicates that an object type is required. 781 Currently one of: `blob`, `tree`, `commit`, or `tag`. 782 783<file>:: 784 Indicates a filename - almost always relative to the 785 root of the tree structure `GIT_INDEX_FILE` describes. 786 787Symbolic Identifiers 788-------------------- 789Any Git command accepting any <object> can also use the following 790symbolic notation: 791 792HEAD:: 793 indicates the head of the current branch. 794 795<tag>:: 796 a valid tag 'name' 797 (i.e. a `refs/tags/<tag>` reference). 798 799<head>:: 800 a valid head 'name' 801 (i.e. a `refs/heads/<head>` reference). 802 803For a more complete list of ways to spell object names, see 804"SPECIFYING REVISIONS" section in linkgit:gitrevisions[7]. 805 806 807File/Directory Structure 808------------------------ 809 810Please see the linkgit:gitrepository-layout[5] document. 811 812Read linkgit:githooks[5] for more details about each hook. 813 814Higher level SCMs may provide and manage additional information in the 815`$GIT_DIR`. 816 817 818Terminology 819----------- 820Please see linkgit:gitglossary[7]. 821 822 823Environment Variables 824--------------------- 825Various Git commands use the following environment variables: 826 827The Git Repository 828~~~~~~~~~~~~~~~~~~ 829These environment variables apply to 'all' core Git commands. Nb: it 830is worth noting that they may be used/overridden by SCMS sitting above 831Git so take care if using a foreign front-end. 832 833`GIT_INDEX_FILE`:: 834 This environment allows the specification of an alternate 835 index file. If not specified, the default of `$GIT_DIR/index` 836 is used. 837 838`GIT_INDEX_VERSION`:: 839 This environment variable allows the specification of an index 840 version for new repositories. It won't affect existing index 841 files. By default index file version 2 or 3 is used. See 842 linkgit:git-update-index[1] for more information. 843 844`GIT_OBJECT_DIRECTORY`:: 845 If the object storage directory is specified via this 846 environment variable then the sha1 directories are created 847 underneath - otherwise the default `$GIT_DIR/objects` 848 directory is used. 849 850`GIT_ALTERNATE_OBJECT_DIRECTORIES`:: 851 Due to the immutable nature of Git objects, old objects can be 852 archived into shared, read-only directories. This variable 853 specifies a ":" separated (on Windows ";" separated) list 854 of Git object directories which can be used to search for Git 855 objects. New objects will not be written to these directories. 856 857`GIT_DIR`:: 858 If the `GIT_DIR` environment variable is set then it 859 specifies a path to use instead of the default `.git` 860 for the base of the repository. 861 The `--git-dir` command-line option also sets this value. 862 863`GIT_WORK_TREE`:: 864 Set the path to the root of the working tree. 865 This can also be controlled by the `--work-tree` command-line 866 option and the core.worktree configuration variable. 867 868`GIT_NAMESPACE`:: 869 Set the Git namespace; see linkgit:gitnamespaces[7] for details. 870 The `--namespace` command-line option also sets this value. 871 872`GIT_CEILING_DIRECTORIES`:: 873 This should be a colon-separated list of absolute paths. If 874 set, it is a list of directories that Git should not chdir up 875 into while looking for a repository directory (useful for 876 excluding slow-loading network directories). It will not 877 exclude the current working directory or a GIT_DIR set on the 878 command line or in the environment. Normally, Git has to read 879 the entries in this list and resolve any symlink that 880 might be present in order to compare them with the current 881 directory. However, if even this access is slow, you 882 can add an empty entry to the list to tell Git that the 883 subsequent entries are not symlinks and needn't be resolved; 884 e.g., 885 `GIT_CEILING_DIRECTORIES=/maybe/symlink::/very/slow/non/symlink`. 886 887`GIT_DISCOVERY_ACROSS_FILESYSTEM`:: 888 When run in a directory that does not have ".git" repository 889 directory, Git tries to find such a directory in the parent 890 directories to find the top of the working tree, but by default it 891 does not cross filesystem boundaries. This environment variable 892 can be set to true to tell Git not to stop at filesystem 893 boundaries. Like `GIT_CEILING_DIRECTORIES`, this will not affect 894 an explicit repository directory set via `GIT_DIR` or on the 895 command line. 896 897`GIT_COMMON_DIR`:: 898 If this variable is set to a path, non-worktree files that are 899 normally in $GIT_DIR will be taken from this path 900 instead. Worktree-specific files such as HEAD or index are 901 taken from $GIT_DIR. See linkgit:gitrepository-layout[5] and 902 linkgit:git-worktree[1] for 903 details. This variable has lower precedence than other path 904 variables such as GIT_INDEX_FILE, GIT_OBJECT_DIRECTORY... 905 906Git Commits 907~~~~~~~~~~~ 908`GIT_AUTHOR_NAME`:: 909`GIT_AUTHOR_EMAIL`:: 910`GIT_AUTHOR_DATE`:: 911`GIT_COMMITTER_NAME`:: 912`GIT_COMMITTER_EMAIL`:: 913`GIT_COMMITTER_DATE`:: 914'EMAIL':: 915 see linkgit:git-commit-tree[1] 916 917Git Diffs 918~~~~~~~~~ 919`GIT_DIFF_OPTS`:: 920 Only valid setting is "--unified=??" or "-u??" to set the 921 number of context lines shown when a unified diff is created. 922 This takes precedence over any "-U" or "--unified" option 923 value passed on the Git diff command line. 924 925`GIT_EXTERNAL_DIFF`:: 926 When the environment variable `GIT_EXTERNAL_DIFF` is set, the 927 program named by it is called, instead of the diff invocation 928 described above. For a path that is added, removed, or modified, 929 `GIT_EXTERNAL_DIFF` is called with 7 parameters: 930 931 path old-file old-hex old-mode new-file new-hex new-mode 932+ 933where: 934 935 <old|new>-file:: are files GIT_EXTERNAL_DIFF can use to read the 936 contents of <old|new>, 937 <old|new>-hex:: are the 40-hexdigit SHA-1 hashes, 938 <old|new>-mode:: are the octal representation of the file modes. 939+ 940The file parameters can point at the user's working file 941(e.g. `new-file` in "git-diff-files"), `/dev/null` (e.g. `old-file` 942when a new file is added), or a temporary file (e.g. `old-file` in the 943index). `GIT_EXTERNAL_DIFF` should not worry about unlinking the 944temporary file --- it is removed when `GIT_EXTERNAL_DIFF` exits. 945+ 946For a path that is unmerged, `GIT_EXTERNAL_DIFF` is called with 1 947parameter, <path>. 948+ 949For each path `GIT_EXTERNAL_DIFF` is called, two environment variables, 950`GIT_DIFF_PATH_COUNTER` and `GIT_DIFF_PATH_TOTAL` are set. 951 952`GIT_DIFF_PATH_COUNTER`:: 953 A 1-based counter incremented by one for every path. 954 955`GIT_DIFF_PATH_TOTAL`:: 956 The total number of paths. 957 958other 959~~~~~ 960`GIT_MERGE_VERBOSITY`:: 961 A number controlling the amount of output shown by 962 the recursive merge strategy. Overrides merge.verbosity. 963 See linkgit:git-merge[1] 964 965`GIT_PAGER`:: 966 This environment variable overrides `$PAGER`. If it is set 967 to an empty string or to the value "cat", Git will not launch 968 a pager. See also the `core.pager` option in 969 linkgit:git-config[1]. 970 971`GIT_EDITOR`:: 972 This environment variable overrides `$EDITOR` and `$VISUAL`. 973 It is used by several Git commands when, on interactive mode, 974 an editor is to be launched. See also linkgit:git-var[1] 975 and the `core.editor` option in linkgit:git-config[1]. 976 977`GIT_SSH`:: 978`GIT_SSH_COMMAND`:: 979 If either of these environment variables is set then 'git fetch' 980 and 'git push' will use the specified command instead of 'ssh' 981 when they need to connect to a remote system. 982 The command will be given exactly two or four arguments: the 983 'username@host' (or just 'host') from the URL and the shell 984 command to execute on that remote system, optionally preceded by 985 `-p` (literally) and the 'port' from the URL when it specifies 986 something other than the default SSH port. 987+ 988`$GIT_SSH_COMMAND` takes precedence over `$GIT_SSH`, and is interpreted 989by the shell, which allows additional arguments to be included. 990`$GIT_SSH` on the other hand must be just the path to a program 991(which can be a wrapper shell script, if additional arguments are 992needed). 993+ 994Usually it is easier to configure any desired options through your 995personal `.ssh/config` file. Please consult your ssh documentation 996for further details. 997 998`GIT_ASKPASS`:: 999 If this environment variable is set, then Git commands which need to1000 acquire passwords or passphrases (e.g. for HTTP or IMAP authentication)1001 will call this program with a suitable prompt as command-line argument1002 and read the password from its STDOUT. See also the `core.askPass`1003 option in linkgit:git-config[1].10041005`GIT_TERMINAL_PROMPT`::1006 If this environment variable is set to `0`, git will not prompt1007 on the terminal (e.g., when asking for HTTP authentication).10081009`GIT_CONFIG_NOSYSTEM`::1010 Whether to skip reading settings from the system-wide1011 `$(prefix)/etc/gitconfig` file. This environment variable can1012 be used along with `$HOME` and `$XDG_CONFIG_HOME` to create a1013 predictable environment for a picky script, or you can set it1014 temporarily to avoid using a buggy `/etc/gitconfig` file while1015 waiting for someone with sufficient permissions to fix it.10161017`GIT_FLUSH`::1018 If this environment variable is set to "1", then commands such1019 as 'git blame' (in incremental mode), 'git rev-list', 'git log',1020 'git check-attr' and 'git check-ignore' will1021 force a flush of the output stream after each record have been1022 flushed. If this1023 variable is set to "0", the output of these commands will be done1024 using completely buffered I/O. If this environment variable is1025 not set, Git will choose buffered or record-oriented flushing1026 based on whether stdout appears to be redirected to a file or not.10271028`GIT_TRACE`::1029 Enables general trace messages, e.g. alias expansion, built-in1030 command execution and external command execution.1031+1032If this variable is set to "1", "2" or "true" (comparison1033is case insensitive), trace messages will be printed to1034stderr.1035+1036If the variable is set to an integer value greater than 21037and lower than 10 (strictly) then Git will interpret this1038value as an open file descriptor and will try to write the1039trace messages into this file descriptor.1040+1041Alternatively, if the variable is set to an absolute path1042(starting with a '/' character), Git will interpret this1043as a file path and will try to write the trace messages1044into it.1045+1046Unsetting the variable, or setting it to empty, "0" or1047"false" (case insensitive) disables trace messages.10481049`GIT_TRACE_PACK_ACCESS`::1050 Enables trace messages for all accesses to any packs. For each1051 access, the pack file name and an offset in the pack is1052 recorded. This may be helpful for troubleshooting some1053 pack-related performance problems.1054 See `GIT_TRACE` for available trace output options.10551056`GIT_TRACE_PACKET`::1057 Enables trace messages for all packets coming in or out of a1058 given program. This can help with debugging object negotiation1059 or other protocol issues. Tracing is turned off at a packet1060 starting with "PACK" (but see `GIT_TRACE_PACKFILE` below).1061 See `GIT_TRACE` for available trace output options.10621063`GIT_TRACE_PACKFILE`::1064 Enables tracing of packfiles sent or received by a1065 given program. Unlike other trace output, this trace is1066 verbatim: no headers, and no quoting of binary data. You almost1067 certainly want to direct into a file (e.g.,1068 `GIT_TRACE_PACKFILE=/tmp/my.pack`) rather than displaying it on1069 the terminal or mixing it with other trace output.1070+1071Note that this is currently only implemented for the client side1072of clones and fetches.10731074`GIT_TRACE_PERFORMANCE`::1075 Enables performance related trace messages, e.g. total execution1076 time of each Git command.1077 See `GIT_TRACE` for available trace output options.10781079`GIT_TRACE_SETUP`::1080 Enables trace messages printing the .git, working tree and current1081 working directory after Git has completed its setup phase.1082 See `GIT_TRACE` for available trace output options.10831084`GIT_TRACE_SHALLOW`::1085 Enables trace messages that can help debugging fetching /1086 cloning of shallow repositories.1087 See `GIT_TRACE` for available trace output options.10881089`GIT_LITERAL_PATHSPECS`::1090 Setting this variable to `1` will cause Git to treat all1091 pathspecs literally, rather than as glob patterns. For example,1092 running `GIT_LITERAL_PATHSPECS=1 git log -- '*.c'` will search1093 for commits that touch the path `*.c`, not any paths that the1094 glob `*.c` matches. You might want this if you are feeding1095 literal paths to Git (e.g., paths previously given to you by1096 `git ls-tree`, `--raw` diff output, etc).10971098`GIT_GLOB_PATHSPECS`::1099 Setting this variable to `1` will cause Git to treat all1100 pathspecs as glob patterns (aka "glob" magic).11011102`GIT_NOGLOB_PATHSPECS`::1103 Setting this variable to `1` will cause Git to treat all1104 pathspecs as literal (aka "literal" magic).11051106`GIT_ICASE_PATHSPECS`::1107 Setting this variable to `1` will cause Git to treat all1108 pathspecs as case-insensitive.11091110`GIT_REFLOG_ACTION`::1111 When a ref is updated, reflog entries are created to keep1112 track of the reason why the ref was updated (which is1113 typically the name of the high-level command that updated1114 the ref), in addition to the old and new values of the ref.1115 A scripted Porcelain command can use set_reflog_action1116 helper function in `git-sh-setup` to set its name to this1117 variable when it is invoked as the top level command by the1118 end user, to be recorded in the body of the reflog.11191120`GIT_REF_PARANOIA`::1121 If set to `1`, include broken or badly named refs when iterating1122 over lists of refs. In a normal, non-corrupted repository, this1123 does nothing. However, enabling it may help git to detect and1124 abort some operations in the presence of broken refs. Git sets1125 this variable automatically when performing destructive1126 operations like linkgit:git-prune[1]. You should not need to set1127 it yourself unless you want to be paranoid about making sure1128 an operation has touched every ref (e.g., because you are1129 cloning a repository to make a backup).11301131`GIT_ALLOW_PROTOCOL`::1132 If set, provide a colon-separated list of protocols which are1133 allowed to be used with fetch/push/clone. This is useful to1134 restrict recursive submodule initialization from an untrusted1135 repository. Any protocol not mentioned will be disallowed (i.e.,1136 this is a whitelist, not a blacklist). If the variable is not1137 set at all, all protocols are enabled. The protocol names1138 currently used by git are:11391140 - `file`: any local file-based path (including `file://` URLs,1141 or local paths)11421143 - `git`: the anonymous git protocol over a direct TCP1144 connection (or proxy, if configured)11451146 - `ssh`: git over ssh (including `host:path` syntax,1147 `ssh://`, etc).11481149 - `http`: git over http, both "smart http" and "dumb http".1150 Note that this does _not_ include `https`; if you want both,1151 you should specify both as `http:https`.11521153 - any external helpers are named by their protocol (e.g., use1154 `hg` to allow the `git-remote-hg` helper)115511561157Discussion[[Discussion]]1158------------------------11591160More detail on the following is available from the1161link:user-manual.html#git-concepts[Git concepts chapter of the1162user-manual] and linkgit:gitcore-tutorial[7].11631164A Git project normally consists of a working directory with a ".git"1165subdirectory at the top level. The .git directory contains, among other1166things, a compressed object database representing the complete history1167of the project, an "index" file which links that history to the current1168contents of the working tree, and named pointers into that history such1169as tags and branch heads.11701171The object database contains objects of three main types: blobs, which1172hold file data; trees, which point to blobs and other trees to build up1173directory hierarchies; and commits, which each reference a single tree1174and some number of parent commits.11751176The commit, equivalent to what other systems call a "changeset" or1177"version", represents a step in the project's history, and each parent1178represents an immediately preceding step. Commits with more than one1179parent represent merges of independent lines of development.11801181All objects are named by the SHA-1 hash of their contents, normally1182written as a string of 40 hex digits. Such names are globally unique.1183The entire history leading up to a commit can be vouched for by signing1184just that commit. A fourth object type, the tag, is provided for this1185purpose.11861187When first created, objects are stored in individual files, but for1188efficiency may later be compressed together into "pack files".11891190Named pointers called refs mark interesting points in history. A ref1191may contain the SHA-1 name of an object or the name of another ref. Refs1192with names beginning `ref/head/` contain the SHA-1 name of the most1193recent commit (or "head") of a branch under development. SHA-1 names of1194tags of interest are stored under `ref/tags/`. A special ref named1195`HEAD` contains the name of the currently checked-out branch.11961197The index file is initialized with a list of all paths and, for each1198path, a blob object and a set of attributes. The blob object represents1199the contents of the file as of the head of the current branch. The1200attributes (last modified time, size, etc.) are taken from the1201corresponding file in the working tree. Subsequent changes to the1202working tree can be found by comparing these attributes. The index may1203be updated with new content, and new commits may be created from the1204content stored in the index.12051206The index is also capable of storing multiple entries (called "stages")1207for a given pathname. These stages are used to hold the various1208unmerged version of a file when a merge is in progress.12091210FURTHER DOCUMENTATION1211---------------------12121213See the references in the "description" section to get started1214using Git. The following is probably more detail than necessary1215for a first-time user.12161217The link:user-manual.html#git-concepts[Git concepts chapter of the1218user-manual] and linkgit:gitcore-tutorial[7] both provide1219introductions to the underlying Git architecture.12201221See linkgit:gitworkflows[7] for an overview of recommended workflows.12221223See also the link:howto-index.html[howto] documents for some useful1224examples.12251226The internals are documented in the1227link:technical/api-index.html[Git API documentation].12281229Users migrating from CVS may also want to1230read linkgit:gitcvs-migration[7].123112321233Authors1234-------1235Git was started by Linus Torvalds, and is currently maintained by Junio1236C Hamano. Numerous contributions have come from the Git mailing list1237<git@vger.kernel.org>. http://www.openhub.net/p/git/contributors/summary1238gives you a more complete list of contributors.12391240If you have a clone of git.git itself, the1241output of linkgit:git-shortlog[1] and linkgit:git-blame[1] can show you1242the authors for specific parts of the project.12431244Reporting Bugs1245--------------12461247Report bugs to the Git mailing list <git@vger.kernel.org> where the1248development and maintenance is primarily done. You do not have to be1249subscribed to the list to send a message there.12501251SEE ALSO1252--------1253linkgit:gittutorial[7], linkgit:gittutorial-2[7],1254linkgit:giteveryday[7], linkgit:gitcvs-migration[7],1255linkgit:gitglossary[7], linkgit:gitcore-tutorial[7],1256linkgit:gitcli[7], link:user-manual.html[The Git User's Manual],1257linkgit:gitworkflows[7]12581259GIT1260---1261Part of the linkgit:git[1] suite