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:v2.10.2/git.html[documentation for release 2.10.2] 47 48* release notes for 49 link:RelNotes/2.10.2.txt[2.10.2], 50 link:RelNotes/2.10.1.txt[2.10.1], 51 link:RelNotes/2.10.0.txt[2.10]. 52 53* link:v2.9.3/git.html[documentation for release 2.9.3] 54 55* release notes for 56 link:RelNotes/2.9.3.txt[2.9.3], 57 link:RelNotes/2.9.2.txt[2.9.2], 58 link:RelNotes/2.9.1.txt[2.9.1], 59 link:RelNotes/2.9.0.txt[2.9]. 60 61* link:v2.8.4/git.html[documentation for release 2.8.4] 62 63* release notes for 64 link:RelNotes/2.8.4.txt[2.8.4], 65 link:RelNotes/2.8.3.txt[2.8.3], 66 link:RelNotes/2.8.2.txt[2.8.2], 67 link:RelNotes/2.8.1.txt[2.8.1], 68 link:RelNotes/2.8.0.txt[2.8]. 69 70* link:v2.7.3/git.html[documentation for release 2.7.3] 71 72* release notes for 73 link:RelNotes/2.7.3.txt[2.7.3], 74 link:RelNotes/2.7.2.txt[2.7.2], 75 link:RelNotes/2.7.1.txt[2.7.1], 76 link:RelNotes/2.7.0.txt[2.7]. 77 78* link:v2.6.6/git.html[documentation for release 2.6.6] 79 80* release notes for 81 link:RelNotes/2.6.6.txt[2.6.6], 82 link:RelNotes/2.6.5.txt[2.6.5], 83 link:RelNotes/2.6.4.txt[2.6.4], 84 link:RelNotes/2.6.3.txt[2.6.3], 85 link:RelNotes/2.6.2.txt[2.6.2], 86 link:RelNotes/2.6.1.txt[2.6.1], 87 link:RelNotes/2.6.0.txt[2.6]. 88 89* link:v2.5.5/git.html[documentation for release 2.5.5] 90 91* release notes for 92 link:RelNotes/2.5.5.txt[2.5.5], 93 link:RelNotes/2.5.4.txt[2.5.4], 94 link:RelNotes/2.5.3.txt[2.5.3], 95 link:RelNotes/2.5.2.txt[2.5.2], 96 link:RelNotes/2.5.1.txt[2.5.1], 97 link:RelNotes/2.5.0.txt[2.5]. 98 99* link:v2.4.11/git.html[documentation for release 2.4.11] 100 101* release notes for 102 link:RelNotes/2.4.11.txt[2.4.11], 103 link:RelNotes/2.4.10.txt[2.4.10], 104 link:RelNotes/2.4.9.txt[2.4.9], 105 link:RelNotes/2.4.8.txt[2.4.8], 106 link:RelNotes/2.4.7.txt[2.4.7], 107 link:RelNotes/2.4.6.txt[2.4.6], 108 link:RelNotes/2.4.5.txt[2.4.5], 109 link:RelNotes/2.4.4.txt[2.4.4], 110 link:RelNotes/2.4.3.txt[2.4.3], 111 link:RelNotes/2.4.2.txt[2.4.2], 112 link:RelNotes/2.4.1.txt[2.4.1], 113 link:RelNotes/2.4.0.txt[2.4]. 114 115* link:v2.3.10/git.html[documentation for release 2.3.10] 116 117* release notes for 118 link:RelNotes/2.3.10.txt[2.3.10], 119 link:RelNotes/2.3.9.txt[2.3.9], 120 link:RelNotes/2.3.8.txt[2.3.8], 121 link:RelNotes/2.3.7.txt[2.3.7], 122 link:RelNotes/2.3.6.txt[2.3.6], 123 link:RelNotes/2.3.5.txt[2.3.5], 124 link:RelNotes/2.3.4.txt[2.3.4], 125 link:RelNotes/2.3.3.txt[2.3.3], 126 link:RelNotes/2.3.2.txt[2.3.2], 127 link:RelNotes/2.3.1.txt[2.3.1], 128 link:RelNotes/2.3.0.txt[2.3]. 129 130* link:v2.2.3/git.html[documentation for release 2.2.3] 131 132* release notes for 133 link:RelNotes/2.2.3.txt[2.2.3], 134 link:RelNotes/2.2.2.txt[2.2.2], 135 link:RelNotes/2.2.1.txt[2.2.1], 136 link:RelNotes/2.2.0.txt[2.2]. 137 138* link:v2.1.4/git.html[documentation for release 2.1.4] 139 140* release notes for 141 link:RelNotes/2.1.4.txt[2.1.4], 142 link:RelNotes/2.1.3.txt[2.1.3], 143 link:RelNotes/2.1.2.txt[2.1.2], 144 link:RelNotes/2.1.1.txt[2.1.1], 145 link:RelNotes/2.1.0.txt[2.1]. 146 147* link:v2.0.5/git.html[documentation for release 2.0.5] 148 149* release notes for 150 link:RelNotes/2.0.5.txt[2.0.5], 151 link:RelNotes/2.0.4.txt[2.0.4], 152 link:RelNotes/2.0.3.txt[2.0.3], 153 link:RelNotes/2.0.2.txt[2.0.2], 154 link:RelNotes/2.0.1.txt[2.0.1], 155 link:RelNotes/2.0.0.txt[2.0.0]. 156 157* link:v1.9.5/git.html[documentation for release 1.9.5] 158 159* release notes for 160 link:RelNotes/1.9.5.txt[1.9.5], 161 link:RelNotes/1.9.4.txt[1.9.4], 162 link:RelNotes/1.9.3.txt[1.9.3], 163 link:RelNotes/1.9.2.txt[1.9.2], 164 link:RelNotes/1.9.1.txt[1.9.1], 165 link:RelNotes/1.9.0.txt[1.9.0]. 166 167* link:v1.8.5.6/git.html[documentation for release 1.8.5.6] 168 169* release notes for 170 link:RelNotes/1.8.5.6.txt[1.8.5.6], 171 link:RelNotes/1.8.5.5.txt[1.8.5.5], 172 link:RelNotes/1.8.5.4.txt[1.8.5.4], 173 link:RelNotes/1.8.5.3.txt[1.8.5.3], 174 link:RelNotes/1.8.5.2.txt[1.8.5.2], 175 link:RelNotes/1.8.5.1.txt[1.8.5.1], 176 link:RelNotes/1.8.5.txt[1.8.5]. 177 178* link:v1.8.4.5/git.html[documentation for release 1.8.4.5] 179 180* release notes for 181 link:RelNotes/1.8.4.5.txt[1.8.4.5], 182 link:RelNotes/1.8.4.4.txt[1.8.4.4], 183 link:RelNotes/1.8.4.3.txt[1.8.4.3], 184 link:RelNotes/1.8.4.2.txt[1.8.4.2], 185 link:RelNotes/1.8.4.1.txt[1.8.4.1], 186 link:RelNotes/1.8.4.txt[1.8.4]. 187 188* link:v1.8.3.4/git.html[documentation for release 1.8.3.4] 189 190* release notes for 191 link:RelNotes/1.8.3.4.txt[1.8.3.4], 192 link:RelNotes/1.8.3.3.txt[1.8.3.3], 193 link:RelNotes/1.8.3.2.txt[1.8.3.2], 194 link:RelNotes/1.8.3.1.txt[1.8.3.1], 195 link:RelNotes/1.8.3.txt[1.8.3]. 196 197* link:v1.8.2.3/git.html[documentation for release 1.8.2.3] 198 199* release notes for 200 link:RelNotes/1.8.2.3.txt[1.8.2.3], 201 link:RelNotes/1.8.2.2.txt[1.8.2.2], 202 link:RelNotes/1.8.2.1.txt[1.8.2.1], 203 link:RelNotes/1.8.2.txt[1.8.2]. 204 205* link:v1.8.1.6/git.html[documentation for release 1.8.1.6] 206 207* release notes for 208 link:RelNotes/1.8.1.6.txt[1.8.1.6], 209 link:RelNotes/1.8.1.5.txt[1.8.1.5], 210 link:RelNotes/1.8.1.4.txt[1.8.1.4], 211 link:RelNotes/1.8.1.3.txt[1.8.1.3], 212 link:RelNotes/1.8.1.2.txt[1.8.1.2], 213 link:RelNotes/1.8.1.1.txt[1.8.1.1], 214 link:RelNotes/1.8.1.txt[1.8.1]. 215 216* link:v1.8.0.3/git.html[documentation for release 1.8.0.3] 217 218* release notes for 219 link:RelNotes/1.8.0.3.txt[1.8.0.3], 220 link:RelNotes/1.8.0.2.txt[1.8.0.2], 221 link:RelNotes/1.8.0.1.txt[1.8.0.1], 222 link:RelNotes/1.8.0.txt[1.8.0]. 223 224* link:v1.7.12.4/git.html[documentation for release 1.7.12.4] 225 226* release notes for 227 link:RelNotes/1.7.12.4.txt[1.7.12.4], 228 link:RelNotes/1.7.12.3.txt[1.7.12.3], 229 link:RelNotes/1.7.12.2.txt[1.7.12.2], 230 link:RelNotes/1.7.12.1.txt[1.7.12.1], 231 link:RelNotes/1.7.12.txt[1.7.12]. 232 233* link:v1.7.11.7/git.html[documentation for release 1.7.11.7] 234 235* release notes for 236 link:RelNotes/1.7.11.7.txt[1.7.11.7], 237 link:RelNotes/1.7.11.6.txt[1.7.11.6], 238 link:RelNotes/1.7.11.5.txt[1.7.11.5], 239 link:RelNotes/1.7.11.4.txt[1.7.11.4], 240 link:RelNotes/1.7.11.3.txt[1.7.11.3], 241 link:RelNotes/1.7.11.2.txt[1.7.11.2], 242 link:RelNotes/1.7.11.1.txt[1.7.11.1], 243 link:RelNotes/1.7.11.txt[1.7.11]. 244 245* link:v1.7.10.5/git.html[documentation for release 1.7.10.5] 246 247* release notes for 248 link:RelNotes/1.7.10.5.txt[1.7.10.5], 249 link:RelNotes/1.7.10.4.txt[1.7.10.4], 250 link:RelNotes/1.7.10.3.txt[1.7.10.3], 251 link:RelNotes/1.7.10.2.txt[1.7.10.2], 252 link:RelNotes/1.7.10.1.txt[1.7.10.1], 253 link:RelNotes/1.7.10.txt[1.7.10]. 254 255* link:v1.7.9.7/git.html[documentation for release 1.7.9.7] 256 257* release notes for 258 link:RelNotes/1.7.9.7.txt[1.7.9.7], 259 link:RelNotes/1.7.9.6.txt[1.7.9.6], 260 link:RelNotes/1.7.9.5.txt[1.7.9.5], 261 link:RelNotes/1.7.9.4.txt[1.7.9.4], 262 link:RelNotes/1.7.9.3.txt[1.7.9.3], 263 link:RelNotes/1.7.9.2.txt[1.7.9.2], 264 link:RelNotes/1.7.9.1.txt[1.7.9.1], 265 link:RelNotes/1.7.9.txt[1.7.9]. 266 267* link:v1.7.8.6/git.html[documentation for release 1.7.8.6] 268 269* release notes for 270 link:RelNotes/1.7.8.6.txt[1.7.8.6], 271 link:RelNotes/1.7.8.5.txt[1.7.8.5], 272 link:RelNotes/1.7.8.4.txt[1.7.8.4], 273 link:RelNotes/1.7.8.3.txt[1.7.8.3], 274 link:RelNotes/1.7.8.2.txt[1.7.8.2], 275 link:RelNotes/1.7.8.1.txt[1.7.8.1], 276 link:RelNotes/1.7.8.txt[1.7.8]. 277 278* link:v1.7.7.7/git.html[documentation for release 1.7.7.7] 279 280* release notes for 281 link:RelNotes/1.7.7.7.txt[1.7.7.7], 282 link:RelNotes/1.7.7.6.txt[1.7.7.6], 283 link:RelNotes/1.7.7.5.txt[1.7.7.5], 284 link:RelNotes/1.7.7.4.txt[1.7.7.4], 285 link:RelNotes/1.7.7.3.txt[1.7.7.3], 286 link:RelNotes/1.7.7.2.txt[1.7.7.2], 287 link:RelNotes/1.7.7.1.txt[1.7.7.1], 288 link:RelNotes/1.7.7.txt[1.7.7]. 289 290* link:v1.7.6.6/git.html[documentation for release 1.7.6.6] 291 292* release notes for 293 link:RelNotes/1.7.6.6.txt[1.7.6.6], 294 link:RelNotes/1.7.6.5.txt[1.7.6.5], 295 link:RelNotes/1.7.6.4.txt[1.7.6.4], 296 link:RelNotes/1.7.6.3.txt[1.7.6.3], 297 link:RelNotes/1.7.6.2.txt[1.7.6.2], 298 link:RelNotes/1.7.6.1.txt[1.7.6.1], 299 link:RelNotes/1.7.6.txt[1.7.6]. 300 301* link:v1.7.5.4/git.html[documentation for release 1.7.5.4] 302 303* release notes for 304 link:RelNotes/1.7.5.4.txt[1.7.5.4], 305 link:RelNotes/1.7.5.3.txt[1.7.5.3], 306 link:RelNotes/1.7.5.2.txt[1.7.5.2], 307 link:RelNotes/1.7.5.1.txt[1.7.5.1], 308 link:RelNotes/1.7.5.txt[1.7.5]. 309 310* link:v1.7.4.5/git.html[documentation for release 1.7.4.5] 311 312* release notes for 313 link:RelNotes/1.7.4.5.txt[1.7.4.5], 314 link:RelNotes/1.7.4.4.txt[1.7.4.4], 315 link:RelNotes/1.7.4.3.txt[1.7.4.3], 316 link:RelNotes/1.7.4.2.txt[1.7.4.2], 317 link:RelNotes/1.7.4.1.txt[1.7.4.1], 318 link:RelNotes/1.7.4.txt[1.7.4]. 319 320* link:v1.7.3.5/git.html[documentation for release 1.7.3.5] 321 322* release notes for 323 link:RelNotes/1.7.3.5.txt[1.7.3.5], 324 link:RelNotes/1.7.3.4.txt[1.7.3.4], 325 link:RelNotes/1.7.3.3.txt[1.7.3.3], 326 link:RelNotes/1.7.3.2.txt[1.7.3.2], 327 link:RelNotes/1.7.3.1.txt[1.7.3.1], 328 link:RelNotes/1.7.3.txt[1.7.3]. 329 330* link:v1.7.2.5/git.html[documentation for release 1.7.2.5] 331 332* release notes for 333 link:RelNotes/1.7.2.5.txt[1.7.2.5], 334 link:RelNotes/1.7.2.4.txt[1.7.2.4], 335 link:RelNotes/1.7.2.3.txt[1.7.2.3], 336 link:RelNotes/1.7.2.2.txt[1.7.2.2], 337 link:RelNotes/1.7.2.1.txt[1.7.2.1], 338 link:RelNotes/1.7.2.txt[1.7.2]. 339 340* link:v1.7.1.4/git.html[documentation for release 1.7.1.4] 341 342* release notes for 343 link:RelNotes/1.7.1.4.txt[1.7.1.4], 344 link:RelNotes/1.7.1.3.txt[1.7.1.3], 345 link:RelNotes/1.7.1.2.txt[1.7.1.2], 346 link:RelNotes/1.7.1.1.txt[1.7.1.1], 347 link:RelNotes/1.7.1.txt[1.7.1]. 348 349* link:v1.7.0.9/git.html[documentation for release 1.7.0.9] 350 351* release notes for 352 link:RelNotes/1.7.0.9.txt[1.7.0.9], 353 link:RelNotes/1.7.0.8.txt[1.7.0.8], 354 link:RelNotes/1.7.0.7.txt[1.7.0.7], 355 link:RelNotes/1.7.0.6.txt[1.7.0.6], 356 link:RelNotes/1.7.0.5.txt[1.7.0.5], 357 link:RelNotes/1.7.0.4.txt[1.7.0.4], 358 link:RelNotes/1.7.0.3.txt[1.7.0.3], 359 link:RelNotes/1.7.0.2.txt[1.7.0.2], 360 link:RelNotes/1.7.0.1.txt[1.7.0.1], 361 link:RelNotes/1.7.0.txt[1.7.0]. 362 363* link:v1.6.6.3/git.html[documentation for release 1.6.6.3] 364 365* release notes for 366 link:RelNotes/1.6.6.3.txt[1.6.6.3], 367 link:RelNotes/1.6.6.2.txt[1.6.6.2], 368 link:RelNotes/1.6.6.1.txt[1.6.6.1], 369 link:RelNotes/1.6.6.txt[1.6.6]. 370 371* link:v1.6.5.9/git.html[documentation for release 1.6.5.9] 372 373* release notes for 374 link:RelNotes/1.6.5.9.txt[1.6.5.9], 375 link:RelNotes/1.6.5.8.txt[1.6.5.8], 376 link:RelNotes/1.6.5.7.txt[1.6.5.7], 377 link:RelNotes/1.6.5.6.txt[1.6.5.6], 378 link:RelNotes/1.6.5.5.txt[1.6.5.5], 379 link:RelNotes/1.6.5.4.txt[1.6.5.4], 380 link:RelNotes/1.6.5.3.txt[1.6.5.3], 381 link:RelNotes/1.6.5.2.txt[1.6.5.2], 382 link:RelNotes/1.6.5.1.txt[1.6.5.1], 383 link:RelNotes/1.6.5.txt[1.6.5]. 384 385* link:v1.6.4.5/git.html[documentation for release 1.6.4.5] 386 387* release notes for 388 link:RelNotes/1.6.4.5.txt[1.6.4.5], 389 link:RelNotes/1.6.4.4.txt[1.6.4.4], 390 link:RelNotes/1.6.4.3.txt[1.6.4.3], 391 link:RelNotes/1.6.4.2.txt[1.6.4.2], 392 link:RelNotes/1.6.4.1.txt[1.6.4.1], 393 link:RelNotes/1.6.4.txt[1.6.4]. 394 395* link:v1.6.3.4/git.html[documentation for release 1.6.3.4] 396 397* release notes for 398 link:RelNotes/1.6.3.4.txt[1.6.3.4], 399 link:RelNotes/1.6.3.3.txt[1.6.3.3], 400 link:RelNotes/1.6.3.2.txt[1.6.3.2], 401 link:RelNotes/1.6.3.1.txt[1.6.3.1], 402 link:RelNotes/1.6.3.txt[1.6.3]. 403 404* release notes for 405 link:RelNotes/1.6.2.5.txt[1.6.2.5], 406 link:RelNotes/1.6.2.4.txt[1.6.2.4], 407 link:RelNotes/1.6.2.3.txt[1.6.2.3], 408 link:RelNotes/1.6.2.2.txt[1.6.2.2], 409 link:RelNotes/1.6.2.1.txt[1.6.2.1], 410 link:RelNotes/1.6.2.txt[1.6.2]. 411 412* link:v1.6.1.3/git.html[documentation for release 1.6.1.3] 413 414* release notes for 415 link:RelNotes/1.6.1.3.txt[1.6.1.3], 416 link:RelNotes/1.6.1.2.txt[1.6.1.2], 417 link:RelNotes/1.6.1.1.txt[1.6.1.1], 418 link:RelNotes/1.6.1.txt[1.6.1]. 419 420* link:v1.6.0.6/git.html[documentation for release 1.6.0.6] 421 422* release notes for 423 link:RelNotes/1.6.0.6.txt[1.6.0.6], 424 link:RelNotes/1.6.0.5.txt[1.6.0.5], 425 link:RelNotes/1.6.0.4.txt[1.6.0.4], 426 link:RelNotes/1.6.0.3.txt[1.6.0.3], 427 link:RelNotes/1.6.0.2.txt[1.6.0.2], 428 link:RelNotes/1.6.0.1.txt[1.6.0.1], 429 link:RelNotes/1.6.0.txt[1.6.0]. 430 431* link:v1.5.6.6/git.html[documentation for release 1.5.6.6] 432 433* release notes for 434 link:RelNotes/1.5.6.6.txt[1.5.6.6], 435 link:RelNotes/1.5.6.5.txt[1.5.6.5], 436 link:RelNotes/1.5.6.4.txt[1.5.6.4], 437 link:RelNotes/1.5.6.3.txt[1.5.6.3], 438 link:RelNotes/1.5.6.2.txt[1.5.6.2], 439 link:RelNotes/1.5.6.1.txt[1.5.6.1], 440 link:RelNotes/1.5.6.txt[1.5.6]. 441 442* link:v1.5.5.6/git.html[documentation for release 1.5.5.6] 443 444* release notes for 445 link:RelNotes/1.5.5.6.txt[1.5.5.6], 446 link:RelNotes/1.5.5.5.txt[1.5.5.5], 447 link:RelNotes/1.5.5.4.txt[1.5.5.4], 448 link:RelNotes/1.5.5.3.txt[1.5.5.3], 449 link:RelNotes/1.5.5.2.txt[1.5.5.2], 450 link:RelNotes/1.5.5.1.txt[1.5.5.1], 451 link:RelNotes/1.5.5.txt[1.5.5]. 452 453* link:v1.5.4.7/git.html[documentation for release 1.5.4.7] 454 455* release notes for 456 link:RelNotes/1.5.4.7.txt[1.5.4.7], 457 link:RelNotes/1.5.4.6.txt[1.5.4.6], 458 link:RelNotes/1.5.4.5.txt[1.5.4.5], 459 link:RelNotes/1.5.4.4.txt[1.5.4.4], 460 link:RelNotes/1.5.4.3.txt[1.5.4.3], 461 link:RelNotes/1.5.4.2.txt[1.5.4.2], 462 link:RelNotes/1.5.4.1.txt[1.5.4.1], 463 link:RelNotes/1.5.4.txt[1.5.4]. 464 465* link:v1.5.3.8/git.html[documentation for release 1.5.3.8] 466 467* release notes for 468 link:RelNotes/1.5.3.8.txt[1.5.3.8], 469 link:RelNotes/1.5.3.7.txt[1.5.3.7], 470 link:RelNotes/1.5.3.6.txt[1.5.3.6], 471 link:RelNotes/1.5.3.5.txt[1.5.3.5], 472 link:RelNotes/1.5.3.4.txt[1.5.3.4], 473 link:RelNotes/1.5.3.3.txt[1.5.3.3], 474 link:RelNotes/1.5.3.2.txt[1.5.3.2], 475 link:RelNotes/1.5.3.1.txt[1.5.3.1], 476 link:RelNotes/1.5.3.txt[1.5.3]. 477 478* link:v1.5.2.5/git.html[documentation for release 1.5.2.5] 479 480* release notes for 481 link:RelNotes/1.5.2.5.txt[1.5.2.5], 482 link:RelNotes/1.5.2.4.txt[1.5.2.4], 483 link:RelNotes/1.5.2.3.txt[1.5.2.3], 484 link:RelNotes/1.5.2.2.txt[1.5.2.2], 485 link:RelNotes/1.5.2.1.txt[1.5.2.1], 486 link:RelNotes/1.5.2.txt[1.5.2]. 487 488* link:v1.5.1.6/git.html[documentation for release 1.5.1.6] 489 490* release notes for 491 link:RelNotes/1.5.1.6.txt[1.5.1.6], 492 link:RelNotes/1.5.1.5.txt[1.5.1.5], 493 link:RelNotes/1.5.1.4.txt[1.5.1.4], 494 link:RelNotes/1.5.1.3.txt[1.5.1.3], 495 link:RelNotes/1.5.1.2.txt[1.5.1.2], 496 link:RelNotes/1.5.1.1.txt[1.5.1.1], 497 link:RelNotes/1.5.1.txt[1.5.1]. 498 499* link:v1.5.0.7/git.html[documentation for release 1.5.0.7] 500 501* release notes for 502 link:RelNotes/1.5.0.7.txt[1.5.0.7], 503 link:RelNotes/1.5.0.6.txt[1.5.0.6], 504 link:RelNotes/1.5.0.5.txt[1.5.0.5], 505 link:RelNotes/1.5.0.3.txt[1.5.0.3], 506 link:RelNotes/1.5.0.2.txt[1.5.0.2], 507 link:RelNotes/1.5.0.1.txt[1.5.0.1], 508 link:RelNotes/1.5.0.txt[1.5.0]. 509 510* documentation for release link:v1.4.4.4/git.html[1.4.4.4], 511 link:v1.3.3/git.html[1.3.3], 512 link:v1.2.6/git.html[1.2.6], 513 link:v1.0.13/git.html[1.0.13]. 514 515============ 516 517endif::stalenotes[] 518 519OPTIONS 520------- 521--version:: 522 Prints the Git suite version that the 'git' program came from. 523 524--help:: 525 Prints the synopsis and a list of the most commonly used 526 commands. If the option `--all` or `-a` is given then all 527 available commands are printed. If a Git command is named this 528 option will bring up the manual page for that command. 529+ 530Other options are available to control how the manual page is 531displayed. See linkgit:git-help[1] for more information, 532because `git --help ...` is converted internally into `git 533help ...`. 534 535-C <path>:: 536 Run as if git was started in '<path>' instead of the current working 537 directory. When multiple `-C` options are given, each subsequent 538 non-absolute `-C <path>` is interpreted relative to the preceding `-C 539 <path>`. 540+ 541This option affects options that expect path name like `--git-dir` and 542`--work-tree` in that their interpretations of the path names would be 543made relative to the working directory caused by the `-C` option. For 544example the following invocations are equivalent: 545 546 git --git-dir=a.git --work-tree=b -C c status 547 git --git-dir=c/a.git --work-tree=c/b status 548 549-c <name>=<value>:: 550 Pass a configuration parameter to the command. The value 551 given will override values from configuration files. 552 The <name> is expected in the same format as listed by 553 'git config' (subkeys separated by dots). 554+ 555Note that omitting the `=` in `git -c foo.bar ...` is allowed and sets 556`foo.bar` to the boolean true value (just like `[foo]bar` would in a 557config file). Including the equals but with an empty value (like `git -c 558foo.bar= ...`) sets `foo.bar` to the empty string. 559 560--exec-path[=<path>]:: 561 Path to wherever your core Git programs are installed. 562 This can also be controlled by setting the GIT_EXEC_PATH 563 environment variable. If no path is given, 'git' will print 564 the current setting and then exit. 565 566--html-path:: 567 Print the path, without trailing slash, where Git's HTML 568 documentation is installed and exit. 569 570--man-path:: 571 Print the manpath (see `man(1)`) for the man pages for 572 this version of Git and exit. 573 574--info-path:: 575 Print the path where the Info files documenting this 576 version of Git are installed and exit. 577 578-p:: 579--paginate:: 580 Pipe all output into 'less' (or if set, $PAGER) if standard 581 output is a terminal. This overrides the `pager.<cmd>` 582 configuration options (see the "Configuration Mechanism" section 583 below). 584 585--no-pager:: 586 Do not pipe Git output into a pager. 587 588--git-dir=<path>:: 589 Set the path to the repository. This can also be controlled by 590 setting the `GIT_DIR` environment variable. It can be an absolute 591 path or relative path to current working directory. 592 593--work-tree=<path>:: 594 Set the path to the working tree. It can be an absolute path 595 or a path relative to the current working directory. 596 This can also be controlled by setting the GIT_WORK_TREE 597 environment variable and the core.worktree configuration 598 variable (see core.worktree in linkgit:git-config[1] for a 599 more detailed discussion). 600 601--namespace=<path>:: 602 Set the Git namespace. See linkgit:gitnamespaces[7] for more 603 details. Equivalent to setting the `GIT_NAMESPACE` environment 604 variable. 605 606--bare:: 607 Treat the repository as a bare repository. If GIT_DIR 608 environment is not set, it is set to the current working 609 directory. 610 611--no-replace-objects:: 612 Do not use replacement refs to replace Git objects. See 613 linkgit:git-replace[1] for more information. 614 615--literal-pathspecs:: 616 Treat pathspecs literally (i.e. no globbing, no pathspec magic). 617 This is equivalent to setting the `GIT_LITERAL_PATHSPECS` environment 618 variable to `1`. 619 620--glob-pathspecs:: 621 Add "glob" magic to all pathspec. This is equivalent to setting 622 the `GIT_GLOB_PATHSPECS` environment variable to `1`. Disabling 623 globbing on individual pathspecs can be done using pathspec 624 magic ":(literal)" 625 626--noglob-pathspecs:: 627 Add "literal" magic to all pathspec. This is equivalent to setting 628 the `GIT_NOGLOB_PATHSPECS` environment variable to `1`. Enabling 629 globbing on individual pathspecs can be done using pathspec 630 magic ":(glob)" 631 632--icase-pathspecs:: 633 Add "icase" magic to all pathspec. This is equivalent to setting 634 the `GIT_ICASE_PATHSPECS` environment variable to `1`. 635 636GIT COMMANDS 637------------ 638 639We divide Git into high level ("porcelain") commands and low level 640("plumbing") commands. 641 642High-level commands (porcelain) 643------------------------------- 644 645We separate the porcelain commands into the main commands and some 646ancillary user utilities. 647 648Main porcelain commands 649~~~~~~~~~~~~~~~~~~~~~~~ 650 651include::cmds-mainporcelain.txt[] 652 653Ancillary Commands 654~~~~~~~~~~~~~~~~~~ 655Manipulators: 656 657include::cmds-ancillarymanipulators.txt[] 658 659Interrogators: 660 661include::cmds-ancillaryinterrogators.txt[] 662 663 664Interacting with Others 665~~~~~~~~~~~~~~~~~~~~~~~ 666 667These commands are to interact with foreign SCM and with other 668people via patch over e-mail. 669 670include::cmds-foreignscminterface.txt[] 671 672 673Low-level commands (plumbing) 674----------------------------- 675 676Although Git includes its 677own porcelain layer, its low-level commands are sufficient to support 678development of alternative porcelains. Developers of such porcelains 679might start by reading about linkgit:git-update-index[1] and 680linkgit:git-read-tree[1]. 681 682The interface (input, output, set of options and the semantics) 683to these low-level commands are meant to be a lot more stable 684than Porcelain level commands, because these commands are 685primarily for scripted use. The interface to Porcelain commands 686on the other hand are subject to change in order to improve the 687end user experience. 688 689The following description divides 690the low-level commands into commands that manipulate objects (in 691the repository, index, and working tree), commands that interrogate and 692compare objects, and commands that move objects and references between 693repositories. 694 695 696Manipulation commands 697~~~~~~~~~~~~~~~~~~~~~ 698 699include::cmds-plumbingmanipulators.txt[] 700 701 702Interrogation commands 703~~~~~~~~~~~~~~~~~~~~~~ 704 705include::cmds-plumbinginterrogators.txt[] 706 707In general, the interrogate commands do not touch the files in 708the working tree. 709 710 711Synching repositories 712~~~~~~~~~~~~~~~~~~~~~ 713 714include::cmds-synchingrepositories.txt[] 715 716The following are helper commands used by the above; end users 717typically do not use them directly. 718 719include::cmds-synchelpers.txt[] 720 721 722Internal helper commands 723~~~~~~~~~~~~~~~~~~~~~~~~ 724 725These are internal helper commands used by other commands; end 726users typically do not use them directly. 727 728include::cmds-purehelpers.txt[] 729 730 731Configuration Mechanism 732----------------------- 733 734Git uses a simple text format to store customizations that are per 735repository and are per user. Such a configuration file may look 736like this: 737 738------------ 739# 740# A '#' or ';' character indicates a comment. 741# 742 743; core variables 744[core] 745 ; Don't trust file modes 746 filemode = false 747 748; user identity 749[user] 750 name = "Junio C Hamano" 751 email = "gitster@pobox.com" 752 753------------ 754 755Various commands read from the configuration file and adjust 756their operation accordingly. See linkgit:git-config[1] for a 757list and more details about the configuration mechanism. 758 759 760Identifier Terminology 761---------------------- 762<object>:: 763 Indicates the object name for any type of object. 764 765<blob>:: 766 Indicates a blob object name. 767 768<tree>:: 769 Indicates a tree object name. 770 771<commit>:: 772 Indicates a commit object name. 773 774<tree-ish>:: 775 Indicates a tree, commit or tag object name. A 776 command that takes a <tree-ish> argument ultimately wants to 777 operate on a <tree> object but automatically dereferences 778 <commit> and <tag> objects that point at a <tree>. 779 780<commit-ish>:: 781 Indicates a commit or tag object name. A 782 command that takes a <commit-ish> argument ultimately wants to 783 operate on a <commit> object but automatically dereferences 784 <tag> objects that point at a <commit>. 785 786<type>:: 787 Indicates that an object type is required. 788 Currently one of: `blob`, `tree`, `commit`, or `tag`. 789 790<file>:: 791 Indicates a filename - almost always relative to the 792 root of the tree structure `GIT_INDEX_FILE` describes. 793 794Symbolic Identifiers 795-------------------- 796Any Git command accepting any <object> can also use the following 797symbolic notation: 798 799HEAD:: 800 indicates the head of the current branch. 801 802<tag>:: 803 a valid tag 'name' 804 (i.e. a `refs/tags/<tag>` reference). 805 806<head>:: 807 a valid head 'name' 808 (i.e. a `refs/heads/<head>` reference). 809 810For a more complete list of ways to spell object names, see 811"SPECIFYING REVISIONS" section in linkgit:gitrevisions[7]. 812 813 814File/Directory Structure 815------------------------ 816 817Please see the linkgit:gitrepository-layout[5] document. 818 819Read linkgit:githooks[5] for more details about each hook. 820 821Higher level SCMs may provide and manage additional information in the 822`$GIT_DIR`. 823 824 825Terminology 826----------- 827Please see linkgit:gitglossary[7]. 828 829 830Environment Variables 831--------------------- 832Various Git commands use the following environment variables: 833 834The Git Repository 835~~~~~~~~~~~~~~~~~~ 836These environment variables apply to 'all' core Git commands. Nb: it 837is worth noting that they may be used/overridden by SCMS sitting above 838Git so take care if using a foreign front-end. 839 840`GIT_INDEX_FILE`:: 841 This environment allows the specification of an alternate 842 index file. If not specified, the default of `$GIT_DIR/index` 843 is used. 844 845`GIT_INDEX_VERSION`:: 846 This environment variable allows the specification of an index 847 version for new repositories. It won't affect existing index 848 files. By default index file version 2 or 3 is used. See 849 linkgit:git-update-index[1] for more information. 850 851`GIT_OBJECT_DIRECTORY`:: 852 If the object storage directory is specified via this 853 environment variable then the sha1 directories are created 854 underneath - otherwise the default `$GIT_DIR/objects` 855 directory is used. 856 857`GIT_ALTERNATE_OBJECT_DIRECTORIES`:: 858 Due to the immutable nature of Git objects, old objects can be 859 archived into shared, read-only directories. This variable 860 specifies a ":" separated (on Windows ";" separated) list 861 of Git object directories which can be used to search for Git 862 objects. New objects will not be written to these directories. 863 864`GIT_DIR`:: 865 If the `GIT_DIR` environment variable is set then it 866 specifies a path to use instead of the default `.git` 867 for the base of the repository. 868 The `--git-dir` command-line option also sets this value. 869 870`GIT_WORK_TREE`:: 871 Set the path to the root of the working tree. 872 This can also be controlled by the `--work-tree` command-line 873 option and the core.worktree configuration variable. 874 875`GIT_NAMESPACE`:: 876 Set the Git namespace; see linkgit:gitnamespaces[7] for details. 877 The `--namespace` command-line option also sets this value. 878 879`GIT_CEILING_DIRECTORIES`:: 880 This should be a colon-separated list of absolute paths. If 881 set, it is a list of directories that Git should not chdir up 882 into while looking for a repository directory (useful for 883 excluding slow-loading network directories). It will not 884 exclude the current working directory or a GIT_DIR set on the 885 command line or in the environment. Normally, Git has to read 886 the entries in this list and resolve any symlink that 887 might be present in order to compare them with the current 888 directory. However, if even this access is slow, you 889 can add an empty entry to the list to tell Git that the 890 subsequent entries are not symlinks and needn't be resolved; 891 e.g., 892 `GIT_CEILING_DIRECTORIES=/maybe/symlink::/very/slow/non/symlink`. 893 894`GIT_DISCOVERY_ACROSS_FILESYSTEM`:: 895 When run in a directory that does not have ".git" repository 896 directory, Git tries to find such a directory in the parent 897 directories to find the top of the working tree, but by default it 898 does not cross filesystem boundaries. This environment variable 899 can be set to true to tell Git not to stop at filesystem 900 boundaries. Like `GIT_CEILING_DIRECTORIES`, this will not affect 901 an explicit repository directory set via `GIT_DIR` or on the 902 command line. 903 904`GIT_COMMON_DIR`:: 905 If this variable is set to a path, non-worktree files that are 906 normally in $GIT_DIR will be taken from this path 907 instead. Worktree-specific files such as HEAD or index are 908 taken from $GIT_DIR. See linkgit:gitrepository-layout[5] and 909 linkgit:git-worktree[1] for 910 details. This variable has lower precedence than other path 911 variables such as GIT_INDEX_FILE, GIT_OBJECT_DIRECTORY... 912 913Git Commits 914~~~~~~~~~~~ 915`GIT_AUTHOR_NAME`:: 916`GIT_AUTHOR_EMAIL`:: 917`GIT_AUTHOR_DATE`:: 918`GIT_COMMITTER_NAME`:: 919`GIT_COMMITTER_EMAIL`:: 920`GIT_COMMITTER_DATE`:: 921'EMAIL':: 922 see linkgit:git-commit-tree[1] 923 924Git Diffs 925~~~~~~~~~ 926`GIT_DIFF_OPTS`:: 927 Only valid setting is "--unified=??" or "-u??" to set the 928 number of context lines shown when a unified diff is created. 929 This takes precedence over any "-U" or "--unified" option 930 value passed on the Git diff command line. 931 932`GIT_EXTERNAL_DIFF`:: 933 When the environment variable `GIT_EXTERNAL_DIFF` is set, the 934 program named by it is called, instead of the diff invocation 935 described above. For a path that is added, removed, or modified, 936 `GIT_EXTERNAL_DIFF` is called with 7 parameters: 937 938 path old-file old-hex old-mode new-file new-hex new-mode 939+ 940where: 941 942 <old|new>-file:: are files GIT_EXTERNAL_DIFF can use to read the 943 contents of <old|new>, 944 <old|new>-hex:: are the 40-hexdigit SHA-1 hashes, 945 <old|new>-mode:: are the octal representation of the file modes. 946+ 947The file parameters can point at the user's working file 948(e.g. `new-file` in "git-diff-files"), `/dev/null` (e.g. `old-file` 949when a new file is added), or a temporary file (e.g. `old-file` in the 950index). `GIT_EXTERNAL_DIFF` should not worry about unlinking the 951temporary file --- it is removed when `GIT_EXTERNAL_DIFF` exits. 952+ 953For a path that is unmerged, `GIT_EXTERNAL_DIFF` is called with 1 954parameter, <path>. 955+ 956For each path `GIT_EXTERNAL_DIFF` is called, two environment variables, 957`GIT_DIFF_PATH_COUNTER` and `GIT_DIFF_PATH_TOTAL` are set. 958 959`GIT_DIFF_PATH_COUNTER`:: 960 A 1-based counter incremented by one for every path. 961 962`GIT_DIFF_PATH_TOTAL`:: 963 The total number of paths. 964 965other 966~~~~~ 967`GIT_MERGE_VERBOSITY`:: 968 A number controlling the amount of output shown by 969 the recursive merge strategy. Overrides merge.verbosity. 970 See linkgit:git-merge[1] 971 972`GIT_PAGER`:: 973 This environment variable overrides `$PAGER`. If it is set 974 to an empty string or to the value "cat", Git will not launch 975 a pager. See also the `core.pager` option in 976 linkgit:git-config[1]. 977 978`GIT_EDITOR`:: 979 This environment variable overrides `$EDITOR` and `$VISUAL`. 980 It is used by several Git commands when, on interactive mode, 981 an editor is to be launched. See also linkgit:git-var[1] 982 and the `core.editor` option in linkgit:git-config[1]. 983 984`GIT_SSH`:: 985`GIT_SSH_COMMAND`:: 986 If either of these environment variables is set then 'git fetch' 987 and 'git push' will use the specified command instead of 'ssh' 988 when they need to connect to a remote system. 989 The command will be given exactly two or four arguments: the 990 'username@host' (or just 'host') from the URL and the shell 991 command to execute on that remote system, optionally preceded by 992 `-p` (literally) and the 'port' from the URL when it specifies 993 something other than the default SSH port. 994+ 995`$GIT_SSH_COMMAND` takes precedence over `$GIT_SSH`, and is interpreted 996by the shell, which allows additional arguments to be included. 997`$GIT_SSH` on the other hand must be just the path to a program 998(which can be a wrapper shell script, if additional arguments are 999needed).1000+1001Usually it is easier to configure any desired options through your1002personal `.ssh/config` file. Please consult your ssh documentation1003for further details.10041005`GIT_ASKPASS`::1006 If this environment variable is set, then Git commands which need to1007 acquire passwords or passphrases (e.g. for HTTP or IMAP authentication)1008 will call this program with a suitable prompt as command-line argument1009 and read the password from its STDOUT. See also the `core.askPass`1010 option in linkgit:git-config[1].10111012`GIT_TERMINAL_PROMPT`::1013 If this environment variable is set to `0`, git will not prompt1014 on the terminal (e.g., when asking for HTTP authentication).10151016`GIT_CONFIG_NOSYSTEM`::1017 Whether to skip reading settings from the system-wide1018 `$(prefix)/etc/gitconfig` file. This environment variable can1019 be used along with `$HOME` and `$XDG_CONFIG_HOME` to create a1020 predictable environment for a picky script, or you can set it1021 temporarily to avoid using a buggy `/etc/gitconfig` file while1022 waiting for someone with sufficient permissions to fix it.10231024`GIT_FLUSH`::1025 If this environment variable is set to "1", then commands such1026 as 'git blame' (in incremental mode), 'git rev-list', 'git log',1027 'git check-attr' and 'git check-ignore' will1028 force a flush of the output stream after each record have been1029 flushed. If this1030 variable is set to "0", the output of these commands will be done1031 using completely buffered I/O. If this environment variable is1032 not set, Git will choose buffered or record-oriented flushing1033 based on whether stdout appears to be redirected to a file or not.10341035`GIT_TRACE`::1036 Enables general trace messages, e.g. alias expansion, built-in1037 command execution and external command execution.1038+1039If this variable is set to "1", "2" or "true" (comparison1040is case insensitive), trace messages will be printed to1041stderr.1042+1043If the variable is set to an integer value greater than 21044and lower than 10 (strictly) then Git will interpret this1045value as an open file descriptor and will try to write the1046trace messages into this file descriptor.1047+1048Alternatively, if the variable is set to an absolute path1049(starting with a '/' character), Git will interpret this1050as a file path and will try to write the trace messages1051into it.1052+1053Unsetting the variable, or setting it to empty, "0" or1054"false" (case insensitive) disables trace messages.10551056`GIT_TRACE_PACK_ACCESS`::1057 Enables trace messages for all accesses to any packs. For each1058 access, the pack file name and an offset in the pack is1059 recorded. This may be helpful for troubleshooting some1060 pack-related performance problems.1061 See `GIT_TRACE` for available trace output options.10621063`GIT_TRACE_PACKET`::1064 Enables trace messages for all packets coming in or out of a1065 given program. This can help with debugging object negotiation1066 or other protocol issues. Tracing is turned off at a packet1067 starting with "PACK" (but see `GIT_TRACE_PACKFILE` below).1068 See `GIT_TRACE` for available trace output options.10691070`GIT_TRACE_PACKFILE`::1071 Enables tracing of packfiles sent or received by a1072 given program. Unlike other trace output, this trace is1073 verbatim: no headers, and no quoting of binary data. You almost1074 certainly want to direct into a file (e.g.,1075 `GIT_TRACE_PACKFILE=/tmp/my.pack`) rather than displaying it on1076 the terminal or mixing it with other trace output.1077+1078Note that this is currently only implemented for the client side1079of clones and fetches.10801081`GIT_TRACE_PERFORMANCE`::1082 Enables performance related trace messages, e.g. total execution1083 time of each Git command.1084 See `GIT_TRACE` for available trace output options.10851086`GIT_TRACE_SETUP`::1087 Enables trace messages printing the .git, working tree and current1088 working directory after Git has completed its setup phase.1089 See `GIT_TRACE` for available trace output options.10901091`GIT_TRACE_SHALLOW`::1092 Enables trace messages that can help debugging fetching /1093 cloning of shallow repositories.1094 See `GIT_TRACE` for available trace output options.10951096`GIT_TRACE_CURL`::1097 Enables a curl full trace dump of all incoming and outgoing data,1098 including descriptive information, of the git transport protocol.1099 This is similar to doing curl `--trace-ascii` on the command line.1100 This option overrides setting the `GIT_CURL_VERBOSE` environment1101 variable.1102 See `GIT_TRACE` for available trace output options.11031104`GIT_LITERAL_PATHSPECS`::1105 Setting this variable to `1` will cause Git to treat all1106 pathspecs literally, rather than as glob patterns. For example,1107 running `GIT_LITERAL_PATHSPECS=1 git log -- '*.c'` will search1108 for commits that touch the path `*.c`, not any paths that the1109 glob `*.c` matches. You might want this if you are feeding1110 literal paths to Git (e.g., paths previously given to you by1111 `git ls-tree`, `--raw` diff output, etc).11121113`GIT_GLOB_PATHSPECS`::1114 Setting this variable to `1` will cause Git to treat all1115 pathspecs as glob patterns (aka "glob" magic).11161117`GIT_NOGLOB_PATHSPECS`::1118 Setting this variable to `1` will cause Git to treat all1119 pathspecs as literal (aka "literal" magic).11201121`GIT_ICASE_PATHSPECS`::1122 Setting this variable to `1` will cause Git to treat all1123 pathspecs as case-insensitive.11241125`GIT_REFLOG_ACTION`::1126 When a ref is updated, reflog entries are created to keep1127 track of the reason why the ref was updated (which is1128 typically the name of the high-level command that updated1129 the ref), in addition to the old and new values of the ref.1130 A scripted Porcelain command can use set_reflog_action1131 helper function in `git-sh-setup` to set its name to this1132 variable when it is invoked as the top level command by the1133 end user, to be recorded in the body of the reflog.11341135`GIT_REF_PARANOIA`::1136 If set to `1`, include broken or badly named refs when iterating1137 over lists of refs. In a normal, non-corrupted repository, this1138 does nothing. However, enabling it may help git to detect and1139 abort some operations in the presence of broken refs. Git sets1140 this variable automatically when performing destructive1141 operations like linkgit:git-prune[1]. You should not need to set1142 it yourself unless you want to be paranoid about making sure1143 an operation has touched every ref (e.g., because you are1144 cloning a repository to make a backup).11451146`GIT_ALLOW_PROTOCOL`::1147 If set, provide a colon-separated list of protocols which are1148 allowed to be used with fetch/push/clone. This is useful to1149 restrict recursive submodule initialization from an untrusted1150 repository. Any protocol not mentioned will be disallowed (i.e.,1151 this is a whitelist, not a blacklist). If the variable is not1152 set at all, all protocols are enabled. The protocol names1153 currently used by git are:11541155 - `file`: any local file-based path (including `file://` URLs,1156 or local paths)11571158 - `git`: the anonymous git protocol over a direct TCP1159 connection (or proxy, if configured)11601161 - `ssh`: git over ssh (including `host:path` syntax,1162 `ssh://`, etc).11631164 - `http`: git over http, both "smart http" and "dumb http".1165 Note that this does _not_ include `https`; if you want both,1166 you should specify both as `http:https`.11671168 - any external helpers are named by their protocol (e.g., use1169 `hg` to allow the `git-remote-hg` helper)117011711172Discussion[[Discussion]]1173------------------------11741175More detail on the following is available from the1176link:user-manual.html#git-concepts[Git concepts chapter of the1177user-manual] and linkgit:gitcore-tutorial[7].11781179A Git project normally consists of a working directory with a ".git"1180subdirectory at the top level. The .git directory contains, among other1181things, a compressed object database representing the complete history1182of the project, an "index" file which links that history to the current1183contents of the working tree, and named pointers into that history such1184as tags and branch heads.11851186The object database contains objects of three main types: blobs, which1187hold file data; trees, which point to blobs and other trees to build up1188directory hierarchies; and commits, which each reference a single tree1189and some number of parent commits.11901191The commit, equivalent to what other systems call a "changeset" or1192"version", represents a step in the project's history, and each parent1193represents an immediately preceding step. Commits with more than one1194parent represent merges of independent lines of development.11951196All objects are named by the SHA-1 hash of their contents, normally1197written as a string of 40 hex digits. Such names are globally unique.1198The entire history leading up to a commit can be vouched for by signing1199just that commit. A fourth object type, the tag, is provided for this1200purpose.12011202When first created, objects are stored in individual files, but for1203efficiency may later be compressed together into "pack files".12041205Named pointers called refs mark interesting points in history. A ref1206may contain the SHA-1 name of an object or the name of another ref. Refs1207with names beginning `ref/head/` contain the SHA-1 name of the most1208recent commit (or "head") of a branch under development. SHA-1 names of1209tags of interest are stored under `ref/tags/`. A special ref named1210`HEAD` contains the name of the currently checked-out branch.12111212The index file is initialized with a list of all paths and, for each1213path, a blob object and a set of attributes. The blob object represents1214the contents of the file as of the head of the current branch. The1215attributes (last modified time, size, etc.) are taken from the1216corresponding file in the working tree. Subsequent changes to the1217working tree can be found by comparing these attributes. The index may1218be updated with new content, and new commits may be created from the1219content stored in the index.12201221The index is also capable of storing multiple entries (called "stages")1222for a given pathname. These stages are used to hold the various1223unmerged version of a file when a merge is in progress.12241225FURTHER DOCUMENTATION1226---------------------12271228See the references in the "description" section to get started1229using Git. The following is probably more detail than necessary1230for a first-time user.12311232The link:user-manual.html#git-concepts[Git concepts chapter of the1233user-manual] and linkgit:gitcore-tutorial[7] both provide1234introductions to the underlying Git architecture.12351236See linkgit:gitworkflows[7] for an overview of recommended workflows.12371238See also the link:howto-index.html[howto] documents for some useful1239examples.12401241The internals are documented in the1242link:technical/api-index.html[Git API documentation].12431244Users migrating from CVS may also want to1245read linkgit:gitcvs-migration[7].124612471248Authors1249-------1250Git was started by Linus Torvalds, and is currently maintained by Junio1251C Hamano. Numerous contributions have come from the Git mailing list1252<git@vger.kernel.org>. http://www.openhub.net/p/git/contributors/summary1253gives you a more complete list of contributors.12541255If you have a clone of git.git itself, the1256output of linkgit:git-shortlog[1] and linkgit:git-blame[1] can show you1257the authors for specific parts of the project.12581259Reporting Bugs1260--------------12611262Report bugs to the Git mailing list <git@vger.kernel.org> where the1263development and maintenance is primarily done. You do not have to be1264subscribed to the list to send a message there.12651266SEE ALSO1267--------1268linkgit:gittutorial[7], linkgit:gittutorial-2[7],1269linkgit:giteveryday[7], linkgit:gitcvs-migration[7],1270linkgit:gitglossary[7], linkgit:gitcore-tutorial[7],1271linkgit:gitcli[7], link:user-manual.html[The Git User's Manual],1272linkgit:gitworkflows[7]12731274GIT1275---1276Part of the linkgit:git[1] suite