apt-add-ppa

#!/bin/bash -eu

PPA=(
	"ppa:canonical-kernel-team/ppa        distro kernel build"
	"ppa:canonical-kernel-team/ppa2       distro kernel build#2"
	"ppa:canonical-kernel-team/proposed   distro kernel proposed"
	"ppa:canonical-kernel-team/proposed2  distro kernel proposed#2"
)

echo "Idx  PPA                              Description"
echo "--------------------------------------------------------------"

idx=1
for ppa in "${PPA[@]}" ; do
	printf "%2d:  %s\n" "${idx}" "${ppa#ppa:}"
	idx=$((idx + 1))
done

echo "--------------------------------------------------------------"

echo
while true ; do
	echo -n "Choice: "
	read -r choice
	idx=$((choice - 1))
	if [ $idx -ge 0 ] && [ $idx -lt ${#PPA[@]} ] ; then
		break
	fi
done

ppa=${PPA[${idx}]}
ppa=${ppa%% *}
echo
echo "Add PPA ${ppa}"
set -x
apt-add-repository -P "${ppa}"