Skrypt z laboratoriów z unixów

Skrypt.sh

#!/bin/bash

if [ $# -eq 0 ]; then
	echo -n "Podaj UIDs: " 
	read NUMERY
else
	NUMERY=$*
fi
for NUM in $NUMERY; do 
	OPIS=`cat /etc/passwd | cut -d : -f 3,5 | grep "^$NUM:" | cut -d: -f2`
	if [ "$OPIS" ]; then
		echo "$NUM to $OPIS"
	else
		echo "$NUM opis pusty"
	fi
done