#!/bin/bash

echo "0:$0"
echo "1:$1"
echo "2:$2"

case $1 in
  Test)
    echo $2
  ;;
  *)
    echo 'line0
line1
line2
line3' | awk '
function Test(file) {
  system("\"'$0'\" Test "file)
}
/line2/{
  Test($1)
} 1'
  ;;
esac