How to change dqpk-query -L <package-name> view? - string

Question

I use dpkg-query -L <package-name> to list all files belong to the specific package.
The result is a lot of files with their directory:
/.
/usr
/usr/bin
/usr/bin/tree
/usr/share
/usr/share/doc
/usr/share/doc/tree
/usr/share/doc/tree/TODO
/usr/share/doc/tree/copyright
/usr/share/doc/tree/README.gz
/usr/share/doc/tree/changelog.Debian.gz
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/tree.1.gz
Because the outpu is too many,i always use this command like this:
dpkg-query -L tree > tree.txt
My question is how to change the view of the list in tree.txt to become more human readable,let the output be sorted by their directory prefix.
The rpm -ql <package-name> comand has the same use on Centos.

Answer 1

If you are only interested in the folders:
dpkg -L <pkg-name> | xargs -I{} dirname {} | sort -u
A version which groups files by directory could be done using a shell function:
lspkg() {
pkg="${1}"
if [ -t 1 ] ; then
color_dir=$'\x1b\x5b34;1m'
color_link=$'\x1b\x5b36m'
color_end=$'\x1b\x5b0m'
fi
LANG=C dpkg -L "${pkg}" \
| awk -F: '{printf "%s%s\n",$NF,(NF>1?" (pkg set link)":"")}' \
| sort \
| while read -r file ; do
if [ -d "${file}" ] ; then
echo "${color_dir}${file}${color_end}"
elif /bin/grep -q 'set link)' <<< "$file" ; then
echo " - ${color_link}${file}${color_end}"
else
echo " - ${file}"
fi
done
}