cli

A simple shell library with cli utilities.

hasflag

Checks if a flag is present in the arguments. Returns 'true' if its present, or nothing otherwise.

Example:

hasflag --help $*

readopt

Read the value of an option. It returns the next argument following the option.

Example:

readopt --log-level $*

or

Returns the first argument if not empty, the second otherwise.

value=$(or $candidate "default value")