Srm (Secure rm) is a command-line tool that allows you to securely delete files beyond recovery.

By default, it uses the 35-pass Gutmann method to overwrite files.

Usage:

srm [OPTION]... [FILE]...

Options:

-d, --directory       ignored (for compatibility with rm(1))
 
 -f, --force           ignore nonexistent files, never prompt
 
 -i, --interactive     prompt before any removal
 
 -s, --simple          overwrite with single pass using 0x00 (default)
 
 -P, --openbsd         overwrite with three passes like OpenBSD rm
 
 -D, --dod             overwrite with 7 US DoD compliant passes
 
 -E, --doe             overwrite with 3 US DoE compliant passes
 
 -G, --gutmann         overwrite with 35-pass Gutmann method
 
 -C, --rcmp            overwrite with Royal Canadian Mounted Police passes
 
 -r, -R, --recursive   remove the contents of directories
 
 -v, --verbose         explain what is being done
 
 -h, --help            display this help and exit
 
 -V, --version         display version information and exit