tldr/pages/common/patch.md

patch

Patch a file (or files) with a diff file. Note that diff files should be generated by the diff command.

• Apply a patch using a diff file (filenames must be included in the diff file):

patch < {{patch.diff}}

• Apply a patch to a specific file:

patch {{path/to/file}} < {{patch.diff}}

• Patch a file writing the result to a different file:

patch {{path/to/input_file}} -o {{path/to/output_file}} < {{patch.diff}}

• Apply a patch to the current directory:

patch -p1 < {{patch.diff}}

• Apply the reverse of a patch:

patch -R < {{patch.diff}}