git-apply - Linux

Overview

git-apply applies a patch to the current working tree. It can be used to apply a patch that you have created yourself, or to apply a patch that you have received from someone else.

Syntax

git apply [options] <patch>...

Options/Flags

-v, --verbose: Show the diff that would be applied by the patch.
-C, --check: Check if the patch would apply cleanly. Do not actually apply the patch.
-3, --three-way: Use a three-way merge to apply the patch. This can be useful if the patch conflicts with local changes.
-f, --force: Force the patch to be applied, even if it conflicts with local changes.

Examples

To apply a patch from a file:

git apply patch.patch

To apply a patch from a URL:

git apply https://example.com/patch.patch

To check if a patch would apply cleanly:

git apply --check patch.patch

To force a patch to be applied, even if it conflicts with local changes:

git apply --force patch.patch

Common Issues

One common issue that you may encounter when applying a patch is that it conflicts with local changes. This can happen if you have made changes to the same files that the patch modifies. If this happens, you can use a three-way merge to resolve the conflict.

Another common issue is that the patch may not apply cleanly. This can happen if the patch is for a different version of the code than you are currently using. If this happens, you can try using the --force option to force the patch to be applied.

Integration

git-apply can be used with other Git commands to perform more complex tasks. For example, you can use git-apply to apply a patch to a specific commit:

git apply --index <commit> patch.patch

You can also use git-apply to create a new branch from a patch:

git apply --branch new-branch patch.patch

Related Commands

git-add: Add files to the staging area.
git-commit: Commit changes to the local repository.
git-diff: Show the differences between two commits.
git-merge: Merge two or more commits.
git-stash: Stash changes to the working tree.