The more times you shred the file, the harder it will be to recover.
Usage: Shredder.exe -f file location -i number of iterations
Shredder.exe -f test.exe -i 10
Shredding file... 10.000000% complete
Shredding file... 20.000000% complete
Shredding file... 30.000002% complete
Shredding file... 40.000000% complete
Shredding file... 50.000000% complete
Shredding file... 60.000004% complete
Shredding file... 70.000000% complete
Shredding file... 80.000000% complete
Shredding file... 90.000000% complete
Shredding file... 100.000000% complete
File: test.exe -> shredded successfully.