6 git-tag - Create, list, delete or verify a tag object signed with GPG
12 'git tag' [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>]
13 <name> [<commit> | <object>]
14 'git tag' -d <name>...
15 'git tag' [-n[<num>]] -l [<pattern>]
16 'git tag' -v <name>...
20 Adds a 'tag' reference in `.git/refs/tags/`
22 Unless `-f` is given, the tag must not yet exist in
23 `.git/refs/tags/` directory.
25 If one of `-a`, `-s`, or `-u <key-id>` is passed, the command
26 creates a 'tag' object, and requires the tag message. Unless
27 `-m <msg>` or `-F <file>` is given, an editor is started for the user to type
30 If `-m <msg>` or `-F <file>` is given and `-a`, `-s`, and `-u <key-id>`
31 are absent, `-a` is implied.
33 Otherwise just the SHA1 object name of the commit object is
34 written (i.e. a lightweight tag).
36 A GnuPG signed tag object will be created when `-s` or `-u
37 <key-id>` is used. When `-u <key-id>` is not used, the
38 committer identity for the current user is used to find the
39 GnuPG key for signing.
44 Make an unsigned, annotated tag object
47 Make a GPG-signed tag, using the default e-mail address's key
50 Make a GPG-signed tag, using the given key
53 Replace an existing tag with the given name (instead of failing)
56 Delete existing tags with the given names.
59 Verify the gpg signature of the given tag names.
62 <num> specifies how many lines from the annotation, if any,
63 are printed when using -l.
64 The default is not to print any annotation lines.
65 If no number is given to `-n`, only the first line is printed.
66 If the tag is not annotated, the commit message is displayed instead.
69 List tags with names that match the given pattern (or all if no pattern is given).
70 Typing "git tag" without arguments, also lists all tags.
73 Use the given tag message (instead of prompting).
74 If multiple `-m` options are given, their values are
75 concatenated as separate paragraphs.
76 Implies `-a` if none of `-a`, `-s`, or `-u <key-id>`
80 Take the tag message from the given file. Use '-' to
81 read the message from the standard input.
82 Implies `-a` if none of `-a`, `-s`, or `-u <key-id>`
87 By default, 'git-tag' in sign-with-default mode (-s) will use your
88 committer identity (of the form "Your Name <your@email.address>") to
89 find a key. If you want to use a different default key, you can specify
90 it in the repository configuration as follows:
92 -------------------------------------
94 signingkey = <gpg-key-id>
95 -------------------------------------
104 What should you do when you tag a wrong commit and you would
107 If you never pushed anything out, just re-tag it. Use "-f" to
108 replace the old one. And you're done.
110 But if you have pushed things out (or others could just read
111 your repository directly), then others will have already seen
112 the old tag. In that case you can do one of two things:
115 Just admit you screwed up, and use a different name. Others have
116 already seen one tag-name, and if you keep the same name, you
117 may be in the situation that two people both have "version X",
118 but they actually have 'different' "X"'s. So just call it "X.1"
122 You really want to call the new version "X" too, 'even though'
123 others have already seen the old one. So just use 'git-tag -f'
124 again, as if you hadn't already published the old one.
126 However, Git does *not* (and it should not) change tags behind
127 users back. So if somebody already got the old tag, doing a
128 'git-pull' on your tree shouldn't just make them overwrite the old
131 If somebody got a release tag from you, you cannot just change
132 the tag for them by updating your own one. This is a big
133 security issue, in that people MUST be able to trust their
134 tag-names. If you really want to do the insane thing, you need
135 to just fess up to it, and tell people that you messed up. You
136 can do that by making a very public announcement saying:
139 Ok, I messed up, and I pushed out an earlier version tagged as X. I
140 then fixed something, and retagged the *fixed* tree as X again.
142 If you got the wrong tag, and want the new one, please delete
143 the old one and fetch the new one by doing:
146 git fetch origin tag X
148 to get my updated tag.
150 You can test which tag you have by doing
154 which should return 0123456789abcdef.. if you have the new version.
156 Sorry for inconvenience.
159 Does this seem a bit complicated? It *should* be. There is no
160 way that it would be correct to just "fix" it behind peoples
161 backs. People need to know that their tags might have been
165 On Automatic following
166 ~~~~~~~~~~~~~~~~~~~~~~
168 If you are following somebody else's tree, you are most likely
169 using tracking branches (`refs/heads/origin` in traditional
170 layout, or `refs/remotes/origin/master` in the separate-remote
171 layout). You usually want the tags from the other end.
173 On the other hand, if you are fetching because you would want a
174 one-shot merge from somebody else, you typically do not want to
175 get tags from there. This happens more often for people near
176 the toplevel but not limited to them. Mere mortals when pulling
177 from each other do not necessarily want to automatically get
178 private anchor point tags from the other person.
180 You would notice "please pull" messages on the mailing list says
181 repo URL and branch name alone. This is designed to be easily
182 cut&pasted to a 'git-fetch' command line:
185 Linus, please pull from
187 git://git..../proj.git master
189 to get the following updates...
195 $ git pull git://git..../proj.git master
198 In such a case, you do not want to automatically follow other's
201 One important aspect of git is it is distributed, and being
202 distributed largely means there is no inherent "upstream" or
203 "downstream" in the system. On the face of it, the above
204 example might seem to indicate that the tag namespace is owned
205 by upper echelon of people and tags only flow downwards, but
206 that is not the case. It only shows that the usage pattern
207 determines who are interested in whose tags.
209 A one-shot pull is a sign that a commit history is now crossing
210 the boundary between one circle of people (e.g. "people who are
211 primarily interested in the networking part of the kernel") who may
212 have their own set of tags (e.g. "this is the third release
213 candidate from the networking group to be proposed for general
214 consumption with 2.6.21 release") to another circle of people
215 (e.g. "people who integrate various subsystem improvements").
216 The latter are usually not interested in the detailed tags used
217 internally in the former group (that is what "internal" means).
218 That is why it is desirable not to follow tags automatically in
221 It may well be that among networking people, they may want to
222 exchange the tags internal to their group, but in that workflow
223 they are most likely tracking with each other's progress by
224 having tracking branches. Again, the heuristic to automatically
225 follow such tags is a good thing.
231 If you have imported some changes from another VCS and would like
232 to add tags for major releases of your work, it is useful to be able
233 to specify the date to embed inside of the tag object. The data in
234 the tag object affects, for example, the ordering of tags in the
237 To set the date used in future tag objects, set the environment
238 variable GIT_COMMITTER_DATE to one or more of the date and time. The
239 date and time can be specified in a number of ways; the most common
240 is "YYYY-MM-DD HH:MM".
245 $ GIT_COMMITTER_DATE="2006-10-02 10:31" git tag -s v1.0.1
251 Written by Linus Torvalds <torvalds@osdl.org>,
252 Junio C Hamano <gitster@pobox.com> and Chris Wright <chrisw@osdl.org>.
256 Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
260 Part of the linkgit:git[1] suite