[bash/sh] sort installed packages by human-readable sizes

#! /bin/sh
#When using apt/dpkg, to sort all installed packages, largest first, with human-readable file sizes, on a system with a relatively recent (2013) version of GNU Coreutils, do this:
dpkg-query -Wf '${Installed-size}\t${Package}\n' | column -t|numfmt --header --field=1 --to=iec|sort -h --reverse|less

#or if you want largest last, do that without '--reverse'.
#dpkg-query -Wf '${Installed-size}\t${Package}\n' | column -t|numfmt --header --field=1 --to=iec|sort -h|less

#note that this is incomplete. it displays kilobytes instead of megabytes, and megabytes instead of gigabytes, and so on.