6 git-update-index - Modifies the index or directory cache
12 [--add] [--remove | --force-remove] [--replace]
13 [--refresh [-q] [--unmerged] [--ignore-missing]]
14 [--cacheinfo <mode> <object> <file>]\*
16 [--info-only] [--index-info]
23 Modifies the index or directory cache. Each file mentioned is updated
24 into the index and any 'unmerged' or 'needs updating' state is
27 The way "git-update-index" handles files it is told about can be modified
28 using the various options:
33 If a specified file isn't in the index already then it's
35 Default behaviour is to ignore new files.
38 If a specified file is in the index but is missing then it's
40 Default behaviour is to ignore removed file.
43 Looks at the current index and checks to see if merges or
44 updates are needed by checking stat() information.
47 Quiet. If --refresh finds that the index needs an update, the
48 default behavior is to error out. This option makes
49 git-update-index continue anyway.
52 If --refresh finds unmerged changes in the index, the default
53 behavior is to error out. This option makes git-update-index
57 Ignores missing files during a --refresh
59 --cacheinfo <mode> <object> <path>::
60 Directly insert the specified info into the index.
63 Read index information from stdin.
66 Set the execute permissions on the updated files.
69 Do not create objects in the object database for all
70 <file> arguments that follow this flag; just insert
71 their object IDs into the index.
74 Remove the file from the index even when the working directory
75 still has such a file. (Implies --remove.)
78 By default, when a file `path` exists in the index,
79 git-update-index refuses an attempt to add `path/file`.
80 Similarly if a file `path/file` exists, a file `path`
81 cannot be added. With --replace flag, existing entries
82 that conflicts with the entry being added are
83 automatically removed with warning messages.
86 Instead of taking list of paths from the command line,
87 read list of paths from the standard input. Paths are
88 separated by LF (i.e. one path per line) by default.
91 Report what is being added and removed from index.
94 Only meaningful with `--stdin`; paths are separated with
95 NUL character instead of LF.
98 Do not interpret any more arguments as options.
102 Note that files beginning with '.' are discarded. This includes
103 `./file` and `dir/./file`. If you don't want this, then use
105 The same applies to directories ending '/' and paths with '//'
109 '--refresh' does not calculate a new sha1 file or bring the index
110 up-to-date for mode/content changes. But what it *does* do is to
111 "re-match" the stat information of a file with the index, so that you
112 can refresh the index for a file that hasn't been changed but where
113 the stat entry is out of date.
115 For example, you'd want to do this after doing a "git-read-tree", to link
116 up the stat index details with the proper files.
118 Using --cacheinfo or --info-only
119 --------------------------------
120 '--cacheinfo' is used to register a file that is not in the
121 current working directory. This is useful for minimum-checkout
124 To pretend you have a file with mode and sha1 at path, say:
127 $ git-update-index --cacheinfo mode sha1 path
130 '--info-only' is used to register files without placing them in the object
131 database. This is useful for status-only repositories.
133 Both '--cacheinfo' and '--info-only' behave similarly: the index is updated
134 but the object database isn't. '--cacheinfo' is useful when the object is
135 in the database but the file isn't available locally. '--info-only' is
136 useful when the file is available, but you do not wish to update the
143 `--index-info` is a more powerful mechanism that lets you feed
144 multiple entry definitions from the standard input, and designed
145 specifically for scripts. It can take inputs of three formats:
147 . mode SP sha1 TAB path
149 The first format is what "git-apply --index-info"
150 reports, and used to reconstruct a partial tree
151 that is used for phony merge base tree when falling
154 . mode SP type SP sha1 TAB path
156 The second format is to stuff git-ls-tree output
159 . mode SP sha1 SP stage TAB path
161 This format is to put higher order stages into the
162 index file and matches git-ls-files --stage output.
164 To place a higher stage entry to the index, the path should
165 first be removed by feeding a mode=0 entry for the path, and
166 then feeding necessary input lines in the third format.
168 For example, starting with this index:
172 100644 8a1218a1024a212bb3db30becd860315f9f3ac52 0 frotz
175 you can feed the following input to `--index-info`:
178 $ git update-index --index-info
179 0 0000000000000000000000000000000000000000 frotz
180 100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz
181 100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
184 The first line of the input feeds 0 as the mode to remove the
185 path; the SHA1 does not matter as long as it is well formatted.
186 Then the second and third line feeds stage 1 and stage 2 entries
187 for that path. After the above, we would end up with this:
191 100644 8a1218a1024a212bb3db30becd860315f9f3ac52 1 frotz
192 100755 8a1218a1024a212bb3db30becd860315f9f3ac52 2 frotz
198 To update and refresh only the files already checked out:
201 $ git-checkout-index -n -f -a && git-update-index --ignore-missing --refresh
208 The command honors `core.filemode` configuration variable. If
209 your repository is on an filesystem whose executable bits are
210 unreliable, this should be set to 'false' (see gitlink:git-repo-config[1]).
211 This causes the command to ignore differences in file modes recorded
212 in the index and the file mode on the filesystem if they differ only on
213 executable bit. On such an unfortunate filesystem, you may
214 need to use `git-update-index --chmod=`.
219 gitlink:git-repo-config[1]
224 Written by Linus Torvalds <torvalds@osdl.org>
228 Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
232 Part of the gitlink:git[7] suite