name : update-initramfs # update-initramfs(8) completion _update_initramfs() { local cur prev valid_options _get_comp_words_by_ref cur prev # The only option that takes an argument is -k if [[ "$prev" == '-k' ]]; then # Complete with kernel versions _kernel_versions COMPREPLY=( $( compgen -W '${COMPREPLY[@]} all' -- "$cur" ) ) return; fi # Complete with available options (obtained from -h) valid_options=$( update-initramfs -h 2>&1 | \ sed -e '/^ -/!d;s/^ \(-\w\+\).*/\1/' ) COMPREPLY=( $( compgen -W "$valid_options" -- $cur ) ) } complete -F _update_initramfs update-initramfs