Find the package that installed a command

whatinstalled () { local cmdpath=$(realpath -eP $(which -a $1 | grep -E "^/" | tail -n 1) 2>/dev/null) && [ -x "$cmdpath" ] && dpkg -S $cmdpath 2>/dev/null | grep -E ": $cmdpath\$" | cut -d ":" -f 1; }
Put this one-line function somewhere in your shell init, re-login and try whatinstalled <command> This is an elaborate wrapper around "dpkg -S", with numerous safeguards. Symlinks and command aliases are resolved. If the searched command is not an existing executable file or was installed by some other means than dpkg/apt, nothing is printed to stdout, otherwise the package name.
Sample Output
$ whatinstalled ls  
coreutils

$ whatinstalled update-grub      
grub2-common

1 Alternatives + Submit Alt

What Others Think

You need to drop the '&' from '2&> /dev/null' for STDERR to get redirected to /dev/null or change it to '2>&-' to close STDERR.
pdxdoughnut · 294 weeks ago
Ok, I fixed it. It worked for me on zsh so I probably didn't notice that unportable construct.
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seofox · 2 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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