How can I free disk space in ubuntu?

Question

sudo du -h --max-depth=1


72K ./root
4.0K    ./cdrom
16G ./var
4.0K    ./media
5.9G    ./usr
146M    ./boot
12M ./etc
148K    ./tmp
13G ./home
16K ./opt
du: cannot access './run/user/1000/doc': Permission denied
du: cannot access './run/user/1000/gvfs': Permission denied
1.6M    ./run
4.0K    ./srv
4.8G    ./snap
16K ./lost+found
4.0K    ./mnt
0   ./dev
0   ./sys
du: cannot access './proc/9684/task/9684/fd/3': No such file or directory
du: cannot access './proc/9684/task/9684/fdinfo/3': No such file or directory
du: cannot access './proc/9684/fd/4': No such file or directory
du: cannot access './proc/9684/fdinfo/4': No such file or directory
0   ./proc
41G .

Which flies can I delete to free up disk space?

You can delete stuff in your /home/youruser/ folder but not the hidden folders within it. You can uninstall apps and snaps. You can search for tutorials about how to free up space such as this one https://itsfoss.com/free-up-space-ubuntu-linux/ — PonJar, Nov 27 '21 at 08:18
The largest directories you have are ´7varand/home` at 12G and 16G.Look into thes and see what large file and directories there are. In /var it is typical /var/log. Find out what logs that grows and the errors that makes them grow- Fix the errors and delete the old versions of the log-files - typically there are 3 to 5 versions of each logfile. — Soren A, Nov 27 '21 at 08:27
1.3G ./.local/share/Trash/expunged/2726609749/rootfs 1.3G ./.local/share/Trash/expunged/2726609749 9.6G ./.local/share/Trash/expunged
Can I delete all of them? — Avijit, Nov 27 '21 at 08:49
Does this answer your question? Very large log files, what should I do? — karel, Nov 27 '21 at 12:22
I'm going to leave it anyway because /var is maybe where the unneeded large files are located. — karel, Nov 27 '21 at 12:55

score 0 · Answer 1 · edited Mar 24 '22 at 22:00

There's a number of things you can do:

Install BleachBit: deletes unnecessary files.
Remove old revisions of snaps.
Check further options in Ask Ubuntu.

Here's the code that you need to put in a shell script and run (2nd option):

#!/bin/bash
# Removes old revisions of snaps
# close all snaps before running this!!
set -eu
LANG=C snap list --all | awk '/disabled/{print $1, $3}' |
while read snapname revision; do
    snap remove "$snapname" --revision="$revision"
done

score 0 · Answer 2 · answered Nov 20 '22 at 23:06

Maybe this will help some people. I just ran $ docker system prune -a on my work laptop and personal laptop and it cleared, respectively, 75 Gb and 50 Gb of disk space. Lots of Docker stuff hanging around apparently even though if I ran $ docker ps -a there was nothing there.

How can I free disk space in ubuntu?

2 Answers2