About

A function can be called in a command format ¹⁾

A command for a cli interpreter is the equivalent of a expression (statement) that returns as value an exit code.

OS

See Process - Command (Command line)

Format

The first word generally specifies:

• a command to be executed (a shell command, a utility),
• with the rest of the words being that command’s arguments.

commandName arg1 arg2 .... arg3