Kipras Melnikovas <kipras@xxxxxxxxxx> writes: > I don't think `git contacts` is available by default? Correct. It's a Perl script that lives under contrib/ in the git repo (it's not part of the core set of default Git subcommands that the "git" binary is built with). On Ubuntu it lives under /usr/share/doc/git/contrib/contacts/git-contacts [1]. [1] https://packages.ubuntu.com/focal/amd64/git/filelist I could add a blurb about this to avoid confusion. Will update. > ... > $ git contacts > git: 'contacts' is not a git command. See 'git --help'. > ... > > ... > $ git send-email --to=kipras@xxxxxxxxxx --cc-cmd='git contacts' 0001-TEMP.patch > 0001-TEMP.patch > git: 'contacts' is not a git command. See 'git --help'. > (cc-cmd) failed to close pipe to 'git contacts' at /opt/homebrew/opt/git/libexec/git-core/git-send-email line 2021. > ...