Programming

how to delete a file permanently frm computer?

Code:

cd ./directory
rm -f filename
# or
rm -f ./directory/filename

what will exactly do?

and wat is the difference btw shift+delete and above command?
plz rpl
thanks

shift+del can only used with GUI
"rm -f" is used with CUI

read the manual page
"man rm"

UNIX has a system call - unlink()

rm, C library calls like remove() - all use this system call to delete a file. So the best answer to your question is: anything that uses the unlink() call removes a file permanently.

Plus, in base UNIX all file deletions are permanent, there is no recycle bin, there is no undelete. Some GUI's may provide a "recycle bin" to keep Windows users happy. But the files are just moved not deleted.

Just be like oscar the grouch or maybe even the cookie monster and devour that file..

shred!

If you do not want your hacker parents to find your porn..

Code:

shred --force --zero --remove --verbose filename.txt

Yeah.. or I guess you could do chattr the file with the 's' attribute (secure deletion).

Code:

chattr +s filename

READ the man pages/info pages for each command before even thinking about using them