/usr/share/bash-completion/completions/mkfs is in util-linux 2.27.1-6ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | _mkfs_module()
{
local cur prev OPTS
COMPREPLY=()
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}"
case $prev in
'-t'|'--type')
FSTYPES=$(for I in /sbin/mkfs.* /usr/sbin/mkfs.*; do if [ -e $I ]; then echo ${I##*mkfs.}; fi; done)
COMPREPLY=( $(compgen -W "$FSTYPES" -- $cur) )
return 0
;;
'-h'|'--help'|'-V'|'--version')
return 0
;;
esac
case $cur in
-*)
OPTS='--type --verbose --help --version'
COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
return 0
;;
esac
COMPREPLY=( $(compgen -W "$(lsblk -pnro name) /path/to/file" -- $cur) )
return 0
}
complete -F _mkfs_module mkfs
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