scriptingammonite

How to know the directory where the current script lies

When writing a script, I'd like to know where lies the current script, in order to locate other files.

With a regular Scala script, I know how to do so, but with an Ammonite script I don't.

Solution

  • Instead of the standard bang line I normally use:

    #!/usr/bin/env amm

    I changed my script to:

    #!/bin/bash
    exec amm "$0" `dirname "$0"` "$@"
!#

@main
def main(dir: String) {
    print(dir)
}

    The dir argument receives the path where the script lies. It can be absolute or relative.

    If we always desire an absolute path:

    #!/bin/bash
    exec amm "$0" $(cd `dirname "${BASH_SOURCE[0]}"` && pwd) "$@"
!#