I think there's a bug in this; the proc_on calculation doesn't account for multiple lines, it just calculates if the output of grep is greater than 1? grep -c m

I think there's a bug in this; the proc_on calculation doesn't account for multiple lines, it just calculates if the output of grep is greater than 1? grep -c may not be available on all systems, so a more portable way to do this is piping to 'wc -l'