create bash scripting :

1) clone.sh - outputs itself

2)backup.sh - make a gzipd tar archive of your home directory, recursively

3)primes.sh - print out all prime numbers from 2 to the first argument

4)iors.sh - determine if its first argument is a string or a number

5)sdel.sh - safe delete. Like rm but rather moves to the file to ~/.trash dont overwrite anything in the trash