Free up disk space on Linux

The usual causes of a full disk on Linux are the apt cache, system logs and old Snap package revisions.

1. Check available space

   df -h /

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   Look at the Use% column. Above 90%, it's time to clean up.

2. Find the largest folders

   du -h --max-depth=1 ~ | sort -hr | head -15

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1. Clear the apt cache

   sudo apt clean
   sudo apt autoremove --purge -y

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2. Shrink system logs

   sudo journalctl --vacuum-size=200M

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3. Limit old Snap revisions

   Snap keeps several versions of each app. Keep only the last two:

   sudo snap set system refresh.retain=2

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