Free up space on Linux root partition

free-up-space-on-linux-root-partition.sh

# Check disk usage by journal
journalctl --disk-usage

# Mark current journal files as archived so they are no longer being written to
sudo journalctl --rotate

# Delete journal logs older than X days
sudo journalctl --vacuum-time=1day

# Delete log files until the disk space taken falls below the specified size
sudo journalctl --vacuum-size=100M

# Delete old logs and limit file number to X
sudo journalctl --vacuum-files=5

# Edit journal log configuration
sudo vim /etc/systemd/journald.conf

# Change SystemMaxUse=100M or whatever size needed

# Reload systemd daemon
systemctl daemon-reload

# Credit: https://ubuntuhandbook.org/index.php/2020/12/clear-systemd-journal-logs-ubuntu/

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# Clean apt cache
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# Check apt cache size
sudo du -sh /var/cache/apt-archives/

# Clean apt cache
sudo apt-get clean

# Removes only packages that are not possible to download from available repositories
sudo apt-get autoclean

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# Remove stored older versions of snap packages
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# Check size of extra stored snaps
du -h /var/lib/snapd/snaps
#  4.0K    /var/lib/snapd/snaps/partial
#  5.6G    /var/lib/snapd/snaps

# Shell script to clean all of the older version of snap apps

##########################
# START SNAP CLEAN SCRIPT
##########################

#!/bin/bash
# Removes old revisions of snaps
# CLOSE ALL SNAPS BEFORE RUNNING THIS
set -eu
snap list --all | awk '/disabled/{print $1, $3}' |
    while read snapname revision; do
        snap remove "$snapname" --revision="$revision"
    done

##########################
# END SNAP CLEAN SCRIPT
##########################


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# Remove thumbnail cache
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# Check the size of thumbnail cache
du -sh ~/.cache/thumbnails

# Clear thumbnail cache
rm -rf ~/.cache/thumbnails/*