How To Delete Files In Linux 100%

[Mutt]

Every day we are deleting files for different reasons, so we are moving them to trash, but it's only away from our folder, not from our computer/laptop.
So what we can do in Linux to remove it permanently?

Maybe you heard about "Zero Filling", it's a method to overwrite something with zeros. It is often used by formatting (f. e. DBAN), and also the process can not be undone.

A tool called shred can help us in this case.
Our file is photo.jpg.

$ shred <options> <file>

-v = verbose output
-f = change permissions to allow writing
-z = add a final overwrite with zeros to hide shredding
-u = deallocate and remove file after overwriting

$ shred -vfzu test1.png
shred: test1.png: Durchgang 1/4 (random)...
shred: test1.png: Durchgang 2/4 (random)...
shred: test1.png: Durchgang 3/4 (random)...
shred: test1.png: Durchgang 4/4 (000000)...
shred: test1.png: wird entfernt
shred: test1.png: in 000000000 umbenannt
shred: 000000000: in 00000000 umbenannt
shred: 00000000: in 0000000 umbenannt
shred: 0000000: in 000000 umbenannt
shred: 000000: in 00000 umbenannt
shred: 00000: in 0000 umbenannt
shred: 0000: in 000 umbenannt
shred: 000: in 00 umbenannt
shred: 00: in 0 umbenannt
shred: test1.png: entfernt

And you can try to recover it, but it's impossible.

 

[Father]

Auto-delete files from the trash
Also, if there is a shortage of available memory, the trash must be constantly cleaned. Many people will say that this process is not complicated, but users with a small amount of memory will tell you the opposite, because this process is simply boring.

Follow the path:
Start Menu - "Options" - "System" - "Memory".
In this section, enable "Memory Monitoring Function". Go to " Configure memory monitoring or run it"
Just below there will be a menu that says "Delete files from the trash if they are no longer there". In this section, set up the amount of time allowed for the trash to be emptied.