dir: list_files
ls: list_files
list_files: list_files

hi: say_greeting
hello: say_greeting
greeting: say_greeting
greetings: say_greeting
say_greeting: say_greeting
say_greetings: say_greeting

mk: make_file
New-Item: make_file
make_file: make_file

touch: touch_file
touch_file: touch_file

rm: remove
remove: remove

help: help
guide: help
man: help

exit: exit
poweroff: exit
shutdown: exit

mkdir: make_directory
make_directory: make_directory

p7c: p7c
pcs: p7c
encrypt: p7c