Setup and Config
Getting and Creating Projects
Branching and Merging
Sharing and Updating Projects
Inspection and Comparison
- 2.13.1 → 2.14.2 no changes
- 2.13.0 05/09/17
- 2.9.4 → 2.12.5 no changes
- 2.9.3 08/12/16
- 2.8.1 → 2.9.2 no changes
- 2.8.0 03/28/16
- 2.6.6 → 2.7.6 no changes
- 2.6.5 01/04/16
- 2.6.4 12/08/15
- 2.5.1 → 2.6.3 no changes
- 2.5.0 07/27/15
- 2.3.1 → 2.4.12 no changes
- 2.3.0 02/05/15
- 2.2.1 → 2.2.3 no changes
- 2.2.0 11/26/14
- 2.1.1 → 2.1.4 no changes
- 2.1.0 08/15/14
git update-index [--add] [--remove | --force-remove] [--replace] [--refresh] [-q] [--unmerged] [--ignore-missing] [--cacheinfo <mode> <object> <file>]\* [--chmod=(+|-)x] [--assume-unchanged | --no-assume-unchanged] [--ignore-submodules] [--really-refresh] [--unresolve] [--again | -g] [--info-only] [--index-info] [-z] [--stdin] [--verbose] [--] [<file>]\*
Modifies the index or directory cache. Each file mentioned is updated into the index and any unmerged or needs updating state is cleared.
See also git-add for a more user-friendly way to do some of the most common operations on the index.
The way git-update-index handles files it is told about can be modified using the various options:
If a specified file isn’t in the index already then it’s added. Default behaviour is to ignore new files.
If a specified file is in the index but is missing then it’s removed. Default behavior is to ignore removed file.
Looks at the current index and checks to see if merges or updates are needed by checking stat() information.
Quiet. If --refresh finds that the index needs an update, the default behavior is to error out. This option makes git-update-index continue anyway.
Do not try to update submodules. This option is only respected when passed before --refresh.
If --refresh finds unmerged changes in the index, the default behavior is to error out. This option makes git-update-index continue anyway.
Ignores missing files during a --refresh
- --cacheinfo <mode> <object> <path>
Directly insert the specified info into the index.
Read index information from stdin.
Set the execute permissions on the updated files.
When these flags are specified, the object names recorded for the paths are not updated. Instead, these options set and unset the "assume unchanged" bit for the paths. When the "assume unchanged" bit is on, git stops checking the working tree files for possible modifications, so you need to manually unset the bit to tell git when you change the working tree file. This is sometimes helpful when working with a big project on a filesystem that has very slow lstat(2) system call (e.g. cifs).
This option can be also used as a coarse file-level mechanism to ignore uncommitted changes in tracked files (akin to what
.gitignoredoes for untracked files). You should remember that an explicit git add operation will still cause the file to be refreshed from the working tree. Git will fail (gracefully) in case it needs to modify this file in the index e.g. when merging in a commit; thus, in case the assumed-untracked file is changed upstream, you will need to handle the situation manually.
Runs git-update-index itself on the paths whose index entries are different from those from the
Restores the unmerged or needs updating state of a file during a merge if it was cleared by accident.
Do not create objects in the object database for all <file> arguments that follow this flag; just insert their object IDs into the index.
Remove the file from the index even when the working directory still has such a file. (Implies --remove.)
By default, when a file
pathexists in the index, git-update-index refuses an attempt to add
path/file. Similarly if a file
path/fileexists, a file
pathcannot be added. With --replace flag, existing entries that conflict with the entry being added are automatically removed with warning messages.
Instead of taking list of paths from the command line, read list of paths from the standard input. Paths are separated by LF (i.e. one path per line) by default.
Report what is being added and removed from index.
Only meaningful with
--stdin; paths are separated with NUL character instead of LF.
Do not interpret any more arguments as options.
Files to act on. Note that files beginning with . are discarded. This includes
dir/./file. If you don’t want this, then use cleaner names. The same applies to directories ending / and paths with //
--refresh does not calculate a new sha1 file or bring the index up-to-date for mode/content changes. But what it does do is to "re-match" the stat information of a file with the index, so that you can refresh the index for a file that hasn’t been changed but where the stat entry is out of date.
For example, you’d want to do this after doing a git-read-tree, to link up the stat index details with the proper files.
--cacheinfo is used to register a file that is not in the current working directory. This is useful for minimum-checkout merging.
To pretend you have a file with mode and sha1 at path, say:
$ git update-index --cacheinfo mode sha1 path
--info-only is used to register files without placing them in the object database. This is useful for status-only repositories.
Both --cacheinfo and --info-only behave similarly: the index is updated but the object database isn’t. --cacheinfo is useful when the object is in the database but the file isn’t available locally. --info-only is useful when the file is available, but you do not wish to update the object database.
--index-info is a more powerful mechanism that lets you feed
multiple entry definitions from the standard input, and designed
specifically for scripts. It can take inputs of three formats:
mode SP sha1 TAB path
The first format is what "git-apply --index-info" reports, and used to reconstruct a partial tree that is used for phony merge base tree when falling back on 3-way merge.
mode SP type SP sha1 TAB path
The second format is to stuff git-ls-tree output into the index file.
mode SP sha1 SP stage TAB path
This format is to put higher order stages into the index file and matches git-ls-files --stage output.
To place a higher stage entry to the index, the path should first be removed by feeding a mode=0 entry for the path, and then feeding necessary input lines in the third format.
For example, starting with this index:
$ git ls-files -s 100644 8a1218a1024a212bb3db30becd860315f9f3ac52 0 frotz
you can feed the following input to
$ git update-index --index-info 0 0000000000000000000000000000000000000000 frotz 100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz 100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
The first line of the input feeds 0 as the mode to remove the path; the SHA1 does not matter as long as it is well formatted. Then the second and third line feeds stage 1 and stage 2 entries for that path. After the above, we would end up with this:
$ git ls-files -s 100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz 100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
Many operations in git depend on your filesystem to have an
lstat(2) implementation, so that
information for working tree files can be cheaply checked to see
if the file contents have changed from the version recorded in
the index file. Unfortunately, some filesystems have
lstat(2). If your filesystem is one of them, you
can set "assume unchanged" bit to paths you have not changed to
cause git not to do this check. Note that setting this bit on a
path does not mean git will check the contents of the file to
see if it has changed — it makes git to omit any checking and
assume it has not changed. When you make changes to working
tree files, you have to explicitly tell git about it by dropping
"assume unchanged" bit, either before or after you modify them.
In order to set "assume unchanged" bit, use
option. To unset, use
The command looks at
core.ignorestat configuration variable. When
this is true, paths updated with
git update-index paths... and
paths updated with other git commands that update both index and
working tree (e.g. git-apply --index, git-checkout-index -u,
and git-read-tree -u) are automatically marked as "assume
unchanged". Note that "assume unchanged" bit is not set if
git update-index --refresh finds the working tree file matches
the index (use
git update-index --really-refresh if you want
to mark them as "assume unchanged").
To update and refresh only the files already checked out:
$ git checkout-index -n -f -a && git update-index --ignore-missing --refresh
- On an inefficient filesystem with
$ git update-index --really-refresh (1) $ git update-index --no-assume-unchanged foo.c (2) $ git diff --name-only (3) $ edit foo.c $ git diff --name-only (4) M foo.c $ git update-index foo.c (5) $ git diff --name-only (6) $ edit foo.c $ git diff --name-only (7) $ git update-index --no-assume-unchanged foo.c (8) $ git diff --name-only (9) M foo.c
forces lstat(2) to set "assume unchanged" bits for paths that match index.
mark the path to be edited.
this does lstat(2) and finds index matches the path.
this does lstat(2) and finds index does not match the path.
registering the new version to index sets "assume unchanged" bit.
and it is assumed unchanged.
even after you edit it.
you can tell about the change after the fact.
now it checks with lstat(2) and finds it has been changed.
The command honors
core.filemode configuration variable. If
your repository is on an filesystem whose executable bits are
unreliable, this should be set to false (see git-config).
This causes the command to ignore differences in file modes recorded
in the index and the file mode on the filesystem if they differ only on
executable bit. On such an unfortunate filesystem, you may
need to use git-update-index --chmod=.
Quite similarly, if
core.symlinks configuration variable is set
to false (see git-config), symbolic links are checked out
as plain files, and this command does not modify a recorded file mode
from symbolic link to regular file.
The command looks at
core.ignorestat configuration variable. See
Using "assume unchanged" bit section above.
The command also looks at
core.trustctime configuration variable.
It can be useful when the inode change time is regularly modified by
something outside Git (file system crawlers and backup systems use
ctime for marking files processed) (see git-config).
Written by Linus Torvalds <firstname.lastname@example.org>
Documentation by David Greaves, Junio C Hamano and the git-list <email@example.com>.
Part of the git suite