tldr/pages/common/git-difftool.md

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# git difftool
> Show file changes using external diff tools. Accepts the same options and arguments as Git diff.
> More information: <https://git-scm.com/docs/git-difftool>.
- List available diff tools:
`git difftool --tool-help`
- Set the default diff tool to meld:
`git config --global diff.tool "{{meld}}"`
- Use the default diff tool to show staged changes:
`git difftool --staged`
- Use a specific tool (opendiff) to show changes since a given commit:
`git difftool --tool={{opendiff}} {{commit}}`