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2 .\" Copyright (c) 2017 Martin Pieuchot
3 .\" Copyright (c) 2018, 2019 Stefan Sperling
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17 .Dd $Mdocdate$
18 .Dt GOT 1
19 .Os
20 .Sh NAME
21 .Nm got
22 .Nd game of trees
23 .Sh SYNOPSIS
24 .Nm
25 .Ar command
26 .Op Fl h
27 .Op Ar arg ...
28 .Sh DESCRIPTION
29 .Nm
30 is a version control system which stores the history of tracked files
31 in a Git repository, as used by the Git version control system.
32 This repository format is described in
33 .Xr git-repository 5 .
34 .Pp
35 .Nm
36 is a
37 .Dq distributed
38 version control system because every copy of a repository is writeable.
39 Modifications made to files can be synchronized between repositories
40 at any time.
41 .Pp
42 Files managed by
43 .Nm
44 must be checked out from the repository for modification.
45 Checked out files are stored in a
46 .Em work tree
47 which can be placed at an arbitrary directory in the filesystem hierarchy.
48 The on-disk format of this work tree is described in
49 .Xr got-worktree 5 .
50 .Pp
51 .Nm
52 provides global and command-specific options.
53 Global options must preceed the command name, and are as follows:
54 .Bl -tag -width tenletters
55 .It Fl h
56 Display usage information.
57 .El
58 .Pp
59 The commands for
60 .Nm
61 are as follows:
62 .Bl -tag -width checkout
63 .It Cm init Ar path
64 Create a new empty repository at the specified
65 .Ar path .
66 .It Cm checkout [ Fl b Ar branch ] [ Fl c Ar commit ] [ Fl p Ar path-prefix ] repository-path [ work-tree-path ]
67 Copy files from a repository into a new work tree.
68 If the
69 .Ar work tree path
70 is not specified, either use the last component of
71 .Ar repository path ,
72 or if a
73 .Ar path prefix
74 was specified use the last component of
75 .Ar path prefix .
76 .Pp
77 The options for
78 .Cm got checkout
79 are as follows:
80 .Bl -tag -width Ds
81 .It Fl b Ar branch
82 Check out files from the specified
83 .Ar branch .
84 If this option is not specified, a branch resolved via the repository's HEAD
85 reference will be used.
86 .It Fl c Ar commit
87 Check out files from the specified
88 .Ar commit .
89 The expected argument is a commit ID SHA1 hash.
90 An abbreviated hash argument will be expanded to a full SHA1 hash
91 automatically, provided the abbreviation is unique.
92 If this option is not specified, the most recent commit on the selected
93 branch will be used.
94 .It Fl p Ar path-prefix
95 Restrict the work tree to a subset of the repository's tree hierarchy.
96 Only files beneath the specified
97 .Ar path-prefix
98 will be checked out.
99 .El
100 .It Cm co
101 Short alias for
102 .Cm checkout .
103 .It Cm update [ Fl b Ar branch ] [ Fl c Ar commit ] [ Ar path ]
104 Update an existing work tree to a different commit.
105 Show the status of each affected file, using the following status codes:
106 .Bl -column YXZ description
107 .It U Ta file was updated and contained no local changes
108 .It G Ta file was updated and local changes were merged cleanly
109 .It C Ta file was updated and conflicts occurred during merge
110 .It D Ta file was deleted
111 .It A Ta new file was added
112 .It ~ Ta versioned file is obstructed by a non-regular file
113 .It ! Ta a missing versioned file was restored
114 .El
115 .Pp
116 If a
117 .Ar path
118 is specified, restrict the update operation to files at or within this path.
119 The path is required to exist in the update operation's target commit.
120 Files in the work tree outside this path will remain unchanged and will
121 retain their previously recorded base commit.
122 Some
123 .Nm
124 commands may refuse to run while the work tree contains files from
125 multiple base commits.
126 The base commit of such a work tree can be made consistent by running
127 .Cm got update
128 across the entire work tree.
129 Specifying a
130 .Ar path
131 is incompatible with the
132 .Fl b
133 option.
134 .Pp
135 The options for
136 .Cm got update
137 are as follows:
138 .Bl -tag -width Ds
139 .It Fl b Ar branch
140 Switch the work tree's branch reference to the specified
141 .Ar branch
142 before updating the work tree.
143 This option requires that all paths in the work tree are updated.
144 .It Fl c Ar commit
145 Update the work tree to the specified
146 .Ar commit .
147 The expected argument is a commit ID SHA1 hash.
148 An abbreviated hash argument will be expanded to a full SHA1 hash
149 automatically, provided the abbreviation is unique.
150 If this option is not specified, the most recent commit on the work tree's
151 branch will be used.
152 .El
153 .It Cm up
154 Short alias for
155 .Cm update .
156 .It Cm status [ Ar path ]
157 Show the current modification status of files in a work tree,
158 using the following status codes:
159 .Bl -column YXZ description
160 .It M Ta modified file
161 .It A Ta file scheduled for addition in next commit
162 .It D Ta file scheduled for deletion in next commit
163 .It C Ta modified or added file which contains merge conflicts
164 .It ! Ta versioned file was expected on disk but is missing
165 .It ~ Ta versioned file is obstructed by a non-regular file
166 .It ? Ta unversioned item not tracked by
167 .Nm
168 .El
169 .Pp
170 If a
171 .Ar path
172 is specified, only show modifications within this path.
173 .It Cm st
174 Short alias for
175 .Cm status .
176 .It Cm log [ Fl b ] [ Fl c Ar commit ] [ Fl C Ar number ] [ Fl l Ar N ] [ Fl p ] [ Fl r Ar repository-path ] [ path ]
177 Display history of a repository.
178 If a
179 .Ar path
180 is specified, show only commits which modified this path.
181 .Pp
182 The options for
183 .Cm got log
184 are as follows:
185 .Bl -tag -width Ds
186 .It Fl b
187 Show the linear line of history of the current branch.
188 This option restricts history traversal to the first parent of each commit.
189 Commits which the branch was based on and merge commits which affected the
190 branch will be shown, but individual commits created on parallel branches
191 will be omitted.
192 .It Fl c Ar commit
193 Start traversing history at the specified
194 .Ar commit .
195 The expected argument is the name of a branch or a commit ID SHA1 hash.
196 An abbreviated hash argument will be expanded to a full SHA1 hash
197 automatically, provided the abbreviation is unique.
198 If this option is not specified, default to the work tree's current branch
199 if invoked in a work tree, or to the repository's HEAD reference.
200 .It Fl C Ar number
201 Set the number of context lines shown in diffs with
202 .Fl p .
203 By default, 3 lines of context are shown.
204 .It Fl l Ar N
205 Limit history traversal to a given number of commits.
206 .It Fl p
207 Display the patch of modifications made in each commit.
208 .It Fl r Ar repository-path
209 Use the repository at the specified path.
210 If not specified, assume the repository is located at or above the current
211 working directory.
212 If this directory is a
213 .Nm
214 work tree, use the repository path associated with this work tree.
215 .El
216 .It Cm diff [ Fl C Ar number ] [ Fl r Ar repository-path ] [ Ar object1 Ar object2 | Ar path ]
217 When invoked within a work tree with less than two arguments, display
218 uncommitted changes in the work tree.
219 If a
220 .Ar path
221 is specified, only show changes within this path.
222 .Pp
223 If two arguments are provided, treat each argument as a reference,
224 or an object ID SHA1 hash, and display differences between these objects.
225 Both objects must be of the same type (blobs, trees, or commits).
226 An abbreviated hash argument will be expanded to a full SHA1 hash
227 automatically, provided the abbreviation is unique.
228 .Pp
229 The options for
230 .Cm got diff
231 are as follows:
232 .Bl -tag -width Ds
233 .It Fl C Ar number
234 Set the number of context lines shown in the diff.
235 By default, 3 lines of context are shown.
236 .It Fl r Ar repository-path
237 Use the repository at the specified path.
238 If not specified, assume the repository is located at or above the current
239 working directory.
240 If this directory is a
241 .Nm
242 work tree, use the repository path associated with this work tree.
243 .El
244 .It Cm blame [ Fl c Ar commit ] [ Fl r Ar repository-path ] Ar path
245 Display line-by-line history of a file at the specified path.
246 .Pp
247 The options for
248 .Cm got blame
249 are as follows:
250 .Bl -tag -width Ds
251 .It Fl c Ar commit
252 Start traversing history at the specified
253 .Ar commit .
254 The expected argument is the name of a branch or a commit ID SHA1 hash.
255 An abbreviated hash argument will be expanded to a full SHA1 hash
256 automatically, provided the abbreviation is unique.
257 .It Fl r Ar repository-path
258 Use the repository at the specified path.
259 If not specified, assume the repository is located at or above the current
260 working directory.
261 If this directory is a
262 .Nm
263 work tree, use the repository path associated with this work tree.
264 .El
265 .It Cm tree [ Fl c Ar commit ] [ Fl r Ar repository-path ] [ Fl i ] [ Fl R] [ Ar path ]
266 Display a listing of files and directories at the specified
267 directory path in the repository.
268 Entries shown in this listing may carry one of the following trailing
269 annotations:
270 .Bl -column YXZ description
271 .It / Ta entry is a directory
272 .It * Ta entry is an executable file
273 .El
274 .Pp
275 If no
276 .Ar path
277 is specified, list the repository path corresponding to the current
278 directory of the work tree, or the root directory of the repository
279 if there is no work tree.
280 .Pp
281 The options for
282 .Cm got tree
283 are as follows:
284 .Bl -tag -width Ds
285 .It Fl c Ar commit
286 List files and directories as they appear in the specified
287 .Ar commit .
288 The expected argument is the name of a branch or a commit ID SHA1 hash.
289 An abbreviated hash argument will be expanded to a full SHA1 hash
290 automatically, provided the abbreviation is unique.
291 .It Fl r Ar repository-path
292 Use the repository at the specified path.
293 If not specified, assume the repository is located at or above the current
294 working directory.
295 If this directory is a
296 .Nm
297 work tree, use the repository path associated with this work tree.
298 .It Fl i
299 Show object IDs of files (blob objects) and directories (tree objects).
300 .It Fl R
301 Recurse into sub-directories in the repository.
302 .El
303 .It Cm ref [ Fl r Ar repository-path ] [ Fl l ] [ Fl d Ar name ] [ Ar name Ar target ]
304 Manage references in a repository.
305 .Pp
306 If no options are passed, expect two arguments and attempt to create,
307 or update, the reference with the given
308 .Ar name ,
309 and make it point at the given
310 .Ar target .
311 The target may be an object ID SHA1 hash or an existing reference which
312 will be resolved to an object ID.
313 An abbreviated hash argument will be expanded to a full SHA1 hash
314 automatically, provided the abbreviation is unique.
315 .Pp
316 The options for
317 .Cm got ref
318 are as follows:
319 .Bl -tag -width Ds
320 .It Fl r Ar repository-path
321 Use the repository at the specified path.
322 If not specified, assume the repository is located at or above the current
323 working directory.
324 If this directory is a
325 .Nm
326 work tree, use the repository path associated with this work tree.
327 .It Fl l
328 List all existing references in the repository.
329 .It Fl d Ar name
330 Delete the reference with the specified name from the repository.
331 .El
332 .It Cm branch [ Fl r Ar repository-path ] [ Fl l ] [ Fl d Ar name ] [ Ar name [ Ar base-branch ] ]
333 Manage branches in a repository.
334 .Pp
335 Branches are managed via references which live in the
336 .Dq refs/heads/
337 reference namespace.
338 The
339 .Cm got branch
340 command operates on references in this namespace only.
341 .Pp
342 If no options are passed, expect one or two arguments and attempt to create
343 a branch with the given
344 .Ar name ,
345 and make it point at the given
346 .Ar base-branch .
347 If no
348 .Ar base-branch
349 is specified, default to the work tree's current branch if invoked in a
350 work tree, or to the repository's HEAD reference.
351 .Pp
352 The options for
353 .Cm got branch
354 are as follows:
355 .Bl -tag -width Ds
356 .It Fl r Ar repository-path
357 Use the repository at the specified path.
358 If not specified, assume the repository is located at or above the current
359 working directory.
360 If this directory is a
361 .Nm
362 work tree, use the repository path associated with this work tree.
363 .It Fl l
364 List all existing branches in the repository.
365 .Pp
366 If invoked in a work tree, the work tree's current branch is shown
367 with one the following annotations:
368 .Bl -column YXZ description
369 .It * Ta work tree's base commit matches the branch tip
370 .It ~ Ta work tree's base commit is out-of-date
371 .El
372 .It Fl d Ar name
373 Delete the branch with the specified name from the repository.
374 Only the branch reference is deleted.
375 Any commit, tree, and blob objects belonging to the branch
376 remain in the repository and may be removed separately with
377 .Xr git-gc 1 .
378 .El
379 .It Cm br
380 Short alias for
381 .Cm branch .
382 .It Cm add Ar file-path ...
383 Schedule unversioned files in a work tree for addition to the
384 repository in the next commit.
385 .It Cm remove Ar file-path ...
386 Remove versioned files from a work tree and schedule them for deletion
387 from the repository in the next commit.
388 .Pp
389 The options for
390 .Cm got remove
391 are as follows:
392 .Bl -tag -width Ds
393 .It Fl f
394 Perform the operation even if a file contains uncommitted modifications.
395 .El
396 .It Cm rm
397 Short alias for
398 .Cm remove .
399 .It Cm revert Ar file-path ...
400 Revert any uncommited changes in files at the specified paths.
401 File contents will be overwritten with those contained in the
402 work tree's base commit. There is no way to bring discarded
403 changes back after
404 .Cm got revert !
405 .Pp
406 If a file was added with
407 .Cm got add
408 it will become an unversioned file again.
409 If a file was deleted with
410 .Cm got remove
411 it will be restored.
412 .It Cm rv
413 Short alias for
414 .Cm revert .
415 .It Cm commit [ Fl m Ar message ] [ file-path ]
416 Create a new commit in the repository from local changes in a work tree
417 and use this commit as the new base commit for the work tree.
418 .Pp
419 Show the status of each affected file, using the following status codes:
420 .Bl -column YXZ description
421 .It M Ta modified file
422 .It D Ta file was deleted
423 .It A Ta new file was added
424 .El
425 .Pp
426 Files without local changes will retain their previously recorded base
427 commit.
428 Some
429 .Nm
430 commands may refuse to run while the work tree contains files from
431 multiple base commits.
432 The base commit of such a work tree can be made consistent by running
433 .Cm got update
434 across the entire work tree.
435 .Pp
436 The
437 .Cm got commit
438 command requires the
439 .Ev GOT_AUTHOR
440 environment variable to be set.
441 .Pp
442 The options for
443 .Cm got commit
444 are as follows:
445 .Bl -tag -width Ds
446 .It Fl m Ar message
447 Use the specified log message when creating the new commit.
448 Without the
449 .Fl m
450 option,
451 .Cm got commit
452 opens a temporary file in an editor where a log message can be written.
453 .El
454 .It Cm ci
455 Short alias for
456 .Cm commit .
457 .It Cm cherrypick Ar commit
458 Merge changes from a single
459 .Ar commit
460 into the work tree.
461 The specified
462 .Ar commit
463 must be on a different branch than the work tree's base commit.
464 The expected argument is a reference or a commit ID SHA1 hash.
465 An abbreviated hash argument will be expanded to a full SHA1 hash
466 automatically, provided the abbreviation is unique.
467 .Pp
468 Show the status of each affected file, using the following status codes:
469 .Bl -column YXZ description
470 .It G Ta file was merged
471 .It C Ta file was merged and conflicts occurred during merge
472 .It ! Ta changes destined for a missing file were not merged
473 .It D Ta file was deleted
474 .It d Ta file's deletion was obstructed by local modifications
475 .It A Ta new file was added
476 .It ~ Ta changes destined for a non-regular file were not merged
477 .El
478 .Pp
479 The merged changes will appear as local changes in the work tree, which
480 may be viewed with
481 .Cm got diff ,
482 amended manually or with further
483 .Cm got cherrypick
484 comands,
485 committed with
486 .Cm got commit ,
487 or discarded again with
488 .Cm got revert .
489 .Pp
490 .Cm got cherrypick
491 will refuse to run if certain preconditions are not met.
492 If the work tree contains multiple base commits it must first be updated
493 to a single base commit with
494 .Cm got update .
495 If the work tree already contains files with merge conflicts, these
496 conflicts must be resolved first.
497 .It Cm cy
498 Short alias for
499 .Cm cherrypick .
500 .It Cm backout Ar commit
501 Reverse-merge changes from a single
502 .Ar commit
503 into the work tree.
504 The specified
505 .Ar commit
506 must be on the same branch as the work tree's base commit.
507 The expected argument is a reference or a commit ID SHA1 hash.
508 An abbreviated hash argument will be expanded to a full SHA1 hash
509 automatically, provided the abbreviation is unique.
510 .Pp
511 Show the status of each affected file, using the following status codes:
512 .Bl -column YXZ description
513 .It G Ta file was merged
514 .It C Ta file was merged and conflicts occurred during merge
515 .It ! Ta changes destined for a missing file were not merged
516 .It D Ta file was deleted
517 .It d Ta file's deletion was obstructed by local modifications
518 .It A Ta new file was added
519 .It ~ Ta changes destined for a non-regular file were not merged
520 .El
521 .Pp
522 The reverse-merged changes will appear as local changes in the work tree,
523 which may be viewed with
524 .Cm got diff ,
525 amended manually or with further
526 .Cm got backout
527 comands,
528 committed with
529 .Cm got commit ,
530 or discarded again with
531 .Cm got revert .
532 .Pp
533 .Cm got backout
534 will refuse to run if certain preconditions are not met.
535 If the work tree contains multiple base commits it must first be updated
536 to a single base commit with
537 .Cm got update .
538 If the work tree already contains files with merge conflicts, these
539 conflicts must be resolved first.
540 .It Cm bo
541 Short alias for
542 .Cm backout .
543 .It Cm rebase Ar branch
544 Rebase commits on the specified
545 .Ar branch
546 onto the tip of the current branch of the work tree.
547 The
548 .Ar branch
549 must share common ancestry with the work tree's current branch.
550 Rebasing begins with the first descendent commit of the youngest
551 common ancestor commit shared by the specified
552 .Ar branch
553 and the work tree's current branch, and stops once the tip commit
554 of the specified
555 .Ar branch
556 has been rebased.
557 .Pp
558 Rebased commits are accumulated on a temporary branch and represent
559 the same changes with the same log messages as their counterparts
560 on the original
561 .Ar branch ,
562 but with different commit IDs.
563 Once rebasing has completed successfully, the temporary branch becomes
564 the new version of the specified
565 .Ar branch
566 and the work tree is automatically switched to it.
567 .Pp
568 While rebasing commits, show the status of each affected file,
569 using the following status codes:
570 .Bl -column YXZ description
571 .It G Ta file was merged
572 .It C Ta file was merged and conflicts occurred during merge
573 .It ! Ta changes destined for a missing file were not merged
574 .It D Ta file was deleted
575 .It d Ta file's deletion was obstructed by local modifications
576 .It A Ta new file was added
577 .It ~ Ta changes destined for a non-regular file were not merged
578 .El
579 .Pp
580 If merge conflicts occur the rebase operation is interrupted and may
581 be continued once conflicts have been resolved.
582 Alternatively, the rebase operation may be aborted which will leave
583 .Ar branch
584 unmodified and the work tree switched back to its original branch.
585 .Pp
586 If a merge conflict is resolved in a way which renders the merged
587 change into a no-op change, the corresponding commit will be elided
588 when the rebase operation continues.
589 .Pp
590 .Cm got rebase
591 will refuse to run if certain preconditions are not met.
592 If the work tree contains multiple base commits it must first be updated
593 to a single base commit with
594 .Cm got update .
595 If the work tree contains local changes, these changes must first be
596 committed with
597 .Cm got commit
598 or reverted with
599 .Cm got revert .
600 If the
601 .Ar branch
602 contains changes to files outside of the work tree's path prefix,
603 the work tree cannot be used to rebase this branch.
604 .Pp
605 The
606 .Cm got update
607 and
608 .Cm got commit
609 commands will refuse to run while a rebase operation is in progress.
610 Other commands which manipulate the work tree may be used for
611 conflict resolution purposes.
612 .Pp
613 The options for
614 .Cm got rebase
615 are as follows:
616 .Bl -tag -width Ds
617 .It Fl a
618 Abort an interrupted rebase operation.
619 .It Fl c
620 Continue an interrupted rebase operation.
621 .El
622 .It Cm rb
623 Short alias for
624 .Cm rebase .
625 .El
626 .Sh ENVIRONMENT
627 .Bl -tag -width GOT_AUTHOR
628 .It Ev GOT_AUTHOR
629 The author's name and email address for
630 .Cm got commit ,
631 for example:
632 .An Stefan Sperling Aq Mt stsp@openbsd.org
633 .It Ev VISUAL, Ev EDITOR
634 The editor spawned by
635 .Cm got commit .
636 .El
637 .Sh EXIT STATUS
638 .Ex -std got
639 .Sh EXAMPLES
640 .Pp
641 Clone an existing Git repository for use with
642 .Nm .
643 This step currently requires
644 .Xr git 1 :
645 .Pp
646 .Dl $ cd /var/git/
647 .Dl $ git clone --bare https://github.com/openbsd/src.git
648 .Pp
649 Check out a work tree from this Git repository to /usr/src:
650 .Pp
651 .Dl $ got checkout /var/git/src.git /usr/src
652 .Pp
653 View local changes in a work tree directory:
654 .Pp
655 .Dl $ got status
656 .Dl $ got diff | less
657 .Pp
658 In a work tree or a git repository directory, list all branch references:
659 .Pp
660 .Dl $ got branch -l
661 .Pp
662 In a work tree or a git repository directory, create a new branch called
663 .Dq unified-buffer-cache
664 which is forked off the
665 .Dq master
666 branch:
667 .Pp
668 .Dl $ got branch unified-buffer-cache master
669 .Pp
670 Switch an existing work tree to the branch
671 .Dq unified-buffer-cache .
672 Local changes in the work tree will be preserved and merged if necessary:
673 .Pp
674 .Dl $ got update -b unified-buffer-cache
675 .Pp
676 Create a new commit from local changes in a work tree directory.
677 This new commit will become the head commit of the work tree's current branch:
678 .Pp
679 .Dl $ got commit
680 .Pp
681 In a work tree or a git repository directory, view changes committed in
682 the 3 most recent commits to the work tree's branch, or the branch resolved
683 via the repository's HEAD reference, respectively:
684 .Pp
685 .Dl $ got log -p -l 3 -b
686 .Pp
687 Add new files and remove obsolete files in a work tree directory:
688 .Pp
689 .Dl $ got add sys/uvm/uvm_ubc.c
690 .Dl $ got remove sys/uvm/uvm_vnode.c
691 .Pp
692 Create a new commit from local changes in a work tree directory
693 with a pre-defined log message.
694 .Pp
695 .Dl $ got commit -m 'unify the buffer cache'
696 .Pp
697 Update any work tree checked out from the
698 .Dq unified-buffer-cache
699 branch to the latest commit on this branch:
700 .Pp
701 .Dl $ got update
702 .Pp
703 Fetch new upstream commits into the local repository's master branch.
704 This step currently requires
705 .Xr git 1 :
706 .Pp
707 .Dl $ cd /var/git/src.git
708 .Dl $ git fetch origin master:master
709 .Pp
710 Rebase the
711 .Dq unified-buffer-cache
712 branch on top of the new head commit of the
713 .Dq master
714 branch.
715 .Pp
716 .Dl $ got update -b master
717 .Dl $ got rebase unified-buffer-cache
718 .Sh SEE ALSO
719 .Xr git-repository 5
720 .Xr got-worktree 5
721 .Sh AUTHORS
722 .An Stefan Sperling Aq Mt stsp@openbsd.org
723 .An Martin Pieuchot Aq Mt mpi@openbsd.org
724 .An joshua stein Aq Mt jcs@openbsd.org
725 .Sh CAVEATS
726 .Nm
727 is a work-in-progress and many commands remain to be implemented.
728 At present, the user has to fall back on
729 .Xr git 1
730 to perform many basic tasks.
731 .Pp
732 When working against a repository created with
733 .Dq git clone --bare ,
734 local commits to the
735 .Dq master
736 branch are discouraged, for now, if changes committed to the upstream
737 repository need to be tracked.
738 See the EXAMPLES section.