Update cheatsheets

patch

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# patch
+
+> Patch a file (or files) with a diff file.
+> Note that diff files should be generated by the `diff` command.
+> More information: <https://manned.org/patch>.
+
+- 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}}`