#!/bin/sh
IFS=:;x=0;while true;do read a b c d;
test ${#a} -gt 0||exec echo $x
test $c -lt 240||x=$((x+c));
done < /etc/passwd #!/bin/sh
IFS=:;x=0;while true;do read a b c d;
test ${#a} -gt 0||exec echo $x
test $c -lt 240||x=$((x+c));
done < /etc/passwdNo comments yet.