#!/bin/sh
# Evaluating a function's return value.
# Filter with return value 0 if no match, 1 otherwise. word_filter_2() { if grep -iv "$1" ; then return 0 else return 1 fi } echo "Hi, world." | word_filter_2 "hi" || echo "Invalid input for word_filter_2."
# @Test
# vim: ai et sts=4 ts=4 sw=4