Script to clean up and free disk space in Linux; Docker, Snap, cache, etc

clean_disk.sh

#!/bin/bash

set -eu
set -o pipefail

say() {
 echo "$@" | sed \
         -e "s/\(\(@\(red\|green\|yellow\|blue\|magenta\|cyan\|white\|reset\|b\|u\)\)\+\)[[]\{2\}\(.*\)[]]\{2\}/\1\4@reset/g" \
         -e "s/@red/$(tput setaf 1)/g" \
         -e "s/@green/$(tput setaf 2)/g" \
         -e "s/@yellow/$(tput setaf 3)/g" \
         -e "s/@blue/$(tput setaf 4)/g" \
         -e "s/@magenta/$(tput setaf 5)/g" \
         -e "s/@cyan/$(tput setaf 6)/g" \
         -e "s/@white/$(tput setaf 7)/g" \
         -e "s/@reset/$(tput sgr0)/g" \
         -e "s/@b/$(tput bold)/g" \
         -e "s/@u/$(tput sgr 0 1)/g"
}




say @magenta[["===== 1. Cleaning journal logs ====="]]

say @blue[["Space used by sustem logs before:"]]
journalctl --disk-usage

journalctl --vacuum-time=3

say @blue[["Space used by sustem logs after:"]]
journalctl --disk-usage

# =============================================================

say @magenta[["===== 2. Cleaning old apt-get packages ====="]]

say @blue[["Space used by APT packages before:"]]
du -sh /var/cache/apt

apt-get autoremove

say @blue[["Space used by APT packages after:"]]
du -sh /var/cache/apt


# =============================================================

say @magenta[["===== 3. Cleaning old snaps revisions ====="]]

say @blue[["Space used by snap packages before:"]]
du -h /var/lib/snapd/snaps

# CLOSE ALL SNAPS BEFORE RUNNING THIS
snap list --all | awk '/disabled/{print $1, $3}' |
    while read snapname revision; do
        snap remove "$snapname" --revision="$revision"
    done

 echo "Space used by snap package afetr:"
 du -h /var/lib/snapd/snaps


say @magenta[["===== 4. Cleaning Docker containers ====="]]
docker system prune -a -f;
docker volume rm $(docker volume ls -qf dangling=true)

God dam, last line deleted all my docker volume data