tldr/pages/common/git-difftool.md

git difftool

Show file changes using external diff tools. Accepts the same options and arguments as git diff. See also: 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}}