ksh

TLDR

Start an interactive shell session

$ ksh

Execute specific [c]ommands

$ ksh -c "[echo 'ksh is executed']"

Execute a specific script

$ ksh [path/to/script.ksh]

Check a specific script for syntax errors without executing it

$ ksh -n [path/to/script.ksh]

Execute a specific script, printing each command in the script before executing it

$ ksh -x [path/to/script.ksh]