Check Disk Space

Monitoring disk space is essential for maintaining system performance and preventing storage issues.

Step 1: Open terminal

Press Ctrl+Alt+T to open the terminal.

View overall disk usage for all mounted filesystems:

bash

df -h

The -h flag shows sizes in human-readable format (GB, MB, etc.).

Analyze the size of a specific directory:

bash

du -sh /path/to/folder

Examples:

bash

du -sh /home
du -sh /var/log
du -sh ~/Downloads

Find the largest directories in the filesystem:

bash

du -ahx / | sort -rh | head -n 10

This command:

du -ahx - Shows all files and directories, human-readable, don't cross filesystem boundaries
sort -rh - Sorts by size in reverse order (largest first)
head -n 10 - Shows only the top 10 results

bash

df -i

bash

df -T

bash

du -h --max-depth=2 /path/to/directory

bash

find /path/to/search -type f -size +100M -exec ls -lh {} \;

bash

sudo apt install baobab

bash

sudo apt autoremove
sudo apt autoclean

bash

sudo apt clean

bash

sudo journalctl --vacuum-time=7d

bash

rm -rf ~/.cache/mozilla/firefox/*.default*/cache2

Regular disk space monitoring helps you: