Bleachbit

Specialised and general cleaning.

Notes

From an Ubuntu live ISO

• Delete unwanted files
  • Alternatively, reformat drive with GParted (already installed on Ubuntu live ISO)
• Enable Universe repository with sudo add-apt-repository universe
  • Alternatively, open Software Sources and tick Community-maintained software (universe)
• Update (sudo apt update)
• Install Bleachbit (sudo apt install bleachbit)
• Open Bleachbit
• Wipe free space on the drive

Alternatively (no need for new installation):

• Reformat drive with GParted
• sudo shred -vzn1 /dev/sda # careful!