How to clean unnecessary files in Ubuntu?

How to install bleachbit cleaner and clean unnecessary files in Ubuntu?

Open the terminal (CTRL + ALT + T)

$ sudo apt-get install bleachbit

and run bleachbit in ubuntu terminal

$ sudo bleachbit

With BleachBit you can free cache, delete cookies, clear Internet history, shred temporary files, delete logs, and discard junk you didn't know was there.

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