Alpine script using ncurses dialog which helps with installing missing *-doc packages from apk

install-docs-apk.sh

#!/bin/sh

[ ! -x "$(command -v dialog)" ] && ( apk add dialog || exit)

installed_pkgs=$(apk list -I -q | awk '{ print $1 }' | sed -E 's/(.+)(-[[:digit:]]).+/\1/')

installed_pkgs_doc=$(echo "$installed_pkgs" | grep "\-doc")
installed_pkgs_without_doc=$(echo "$installed_pkgs" | grep -v '\-doc')

installed_pkgs_append_doc=$(echo "$installed_pkgs_without_doc" | awk '{ print $0"-doc" }')

potential_pkgs_doc=$(echo "$installed_pkgs_append_doc" | grep -E -v $(echo "$installed_pkgs_doc" | tr '\n' '|' | sed -E 's/\|$//'))

missing_pkgs_doc=$(echo "$potential_pkgs_doc" | xargs -n30 | xargs apk -v info -d)

checklist_missing_pkgs_doc=$(echo "$missing_pkgs_doc" | sed -E -e 's/([^:]+): (.*)/\1 "\2"/' -e 's/$/ 0/')

missing_pkgs_doc_to_install=$(echo "$checklist_missing_pkgs_doc" | xargs dialog --checklist "Select which missing doc packages you want to install:" 0 0 0 3>&1 1>&2 2>&3)

dialog --clear
clear

echo $missing_pkgs_doc_to_install | xargs -r -n30 apk add

http://openbook.rheinwerk-verlag.de/shell_programmierung/shell_007_007.htm