Or: Finding out what crud you installed that's eating all of your space in Arch Linux
I started running out of space on one of my Arch boxes and wondered (beyond what was in my home directory) what I'd installed that was eating up all the space.
A little bit of bash-fu does the job:
for pkg in $(pacman -Qq); do
size=$(pacman -Qi $pkg | grep "Installed Size" | cut -d ":" -f 2)
echo "$size | $pkg"
done | sed -e 's/ //g' | sort -h
This outputs a list of packages with those using the most disk space at the bottom:
25.99MiB|llvm-libs
31.68MiB|raspberrypi-firmware-examples
32.69MiB|systemd
32.86MiB|glibc
41.88MiB|perl
54.31MiB|gtk2
62.13MiB|python2
73.27MiB|gcc
77.93MiB|python
84.21MiB|linux-firmware
The above is from my pi; not much I can uninstall there ;)