Git - Tag Operation

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Tag operation allows giving meaningful name to a specific version in the repository. Tom decides to tag their project code so they can more easily access it later.

Create tag

Let us tag current HEAD by using git tag command. He provides tag name with -a option and provides tag message with –m option.

tom@CentOS project]$ pwd
/home/tom/top_repo/project

[tom@CentOS project]$ git tag -a 'Release_1_0' -m 'Tagged basic string operation code' HEAD

If you want to tag particular commit, then use appropriate COMMIT ID instead of HEAD pointer. Tom uses below command to push tag to the remote repository.

[tom@CentOS project]$ git push origin tag Release_1_0

Above command will produce the following result:

Counting objects: 1, done.
Writing objects: 100% (1/1), 183 bytes, done.
Total 1 (delta 0), reused 0 (delta 0)
To gituser@git.server.com:project.git
* [new tag]
Release_1_0 −> Release_1_0

View tags

Tom created tag. Now, Jerry can view all available tags by using Git tag command with –l option.

[jerry@CentOS src]$ pwd
/home/jerry/jerry_repo/project/src

[jerry@CentOS src]$ git pull
remote: Counting objects: 1, done.
remote: Total 1 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (1/1), done.
From git.server.com:project
* [new tag]
Release_1_0 −> Release_1_0
Current branch master is up to date.

[jerry@CentOS src]$ git tag -l
Release_1_0

Jerry uses Git show command followed by tag name to view more details about tag.

[jerry@CentOS src]$ git show Release_1_0

Above command will produce the following result:

tag Release_1_0
Tagger: Tom Cat <tom@tutorialspoint.com>
Date: Wed Sep 11 13:45:54 2013 +0530

Tagged basic string operation code


commit 577647211ed44fe2ae479427a0668a4f12ed71a1
Author: Tom Cat <tom@tutorialspoint.com>
Date: Wed Sep 11 10:21:20 2013 +0530

Removed executable binary

diff --git a/src/string_operations b/src/string_operations
deleted file mode 100755
index 654004b..0000000
Binary files a/src/string_operations and /dev/null differ

Delete tags

Tom uses below command to delete tag from local as well as remote repository.

[tom@CentOS project]$ git tag
Release_1_0

[tom@CentOS project]$ git tag -d Release_1_0
Deleted tag 'Release_1_0' (was 0f81ff4)
# Remove tag from remote repository.

[tom@CentOS project]$ git push origin :Release_1_0
To gituser@git.server.com:project.git
- [deleted]
Release_1_0


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