Crunch

Usage: crunch (min-length) (max-length) (charset) -o (wordlist.lst)

4 Digit Wordlist Command: crunch 4 4 0123456789 -o /root/Desktop/pin.lst

If you plan to generate a large wordlist, you can use the following command to create multiple files: crunch (min-length) (max-length) (charset) -o START -c (words per file)

Chosen Pattern Wordlist Usage: crunch (min-length) (max-length) (charset) -t (pattern) -o (wordlist.lst)

e.g. crunch 4 4 0123456789 -t 9@@9 -o /root/Desktop/pin2.lst