[Git] Git Tag

Git Tag

• Semantic Versioning
• Viewing Tag
• Checking Out Tag
• Lightweight Tag
• Annotated Tag
• Tagging Previous Commit
• Forcing and Deleting Tag
• Pushing Tags

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Semantic Versioning

• Standardized versioning system for software releases
• Consist of Three Digit (e.g. 2.4.1)
  • Major Release(e.g. 2)
    • Significant changes that are no longer backwards compatible.
    • Features may be removed or changed substantially
  • Minor Release(e.g. 4)
    • New features or functionality have been added but is still backwards compatible
    • The new functionality is optional and should not force users to rewrite their own code
  • Patch Release(e.g. 1)
    • Does not contain new features or significant changes
    • Typically signify bug fixes and other changes that do not impact the the code is used

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Viewing Tag

# view all tags
git tag

# filter by pattern(git tag -l "{pattern}")
git tag -l "*beta*" # contains beta
git tag -l "v1.0.0" # is exactly v1.0.0

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Checking Out Tag

• Same as checking out to a specific commit

#checkout(git checkout {tag})
git checkout v1.0.0

# Comparing between two tags(git diff {tag1} {tag2})
git diff v1.0.0 v1.0.1

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Lightweight Tag

• Single Name/label of a particular commit

# create lightweight tag(git tag {tagname})
git tag v1.0.0

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Annotated Tag

• Stores extra meta data including author’s name, email, date, and tagging message etc.

# create annotated tag(git tag -a {tagname})
git tag -a v1.0.0

# see the message of the tag
git show v1.0.0

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Tagging Previous Commit

# tag previous commmit(git tag {tag_name} {commit_has})
git tag v1.0.0 234s3s

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Forcing and Deleting Tag

• Tag names cannot be duplicated

# force a tag to switch to another commit(git tag -f {tagname} {commit_hash})
git tag -f v1.0.0 234s3s

# delete a tag(git tag -d {tag_name})
git tag -d v1.0.0

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Pushing Tags

• By default, git push doesn’t transfer tags to remote servers.

# push all tags to remote server
git push --tags

# push single tag(git push {remote_name} {tag_name})
git push origin v1.0.0

Deleting Remote Dag

# delete tag(git push origin :refs/tags/{tag_name})
git push origin :refs/tags/v1.0.0

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