#!/bin/sh
echo 111
[ "`whoami`" = "root" ] || echo "err"
[ "`whoami`" = "root" ] || exit 0
echo 222

= = =

#! /bin/sh

st1=`mount | grep "/dev/sdc1 on /media/box5"`

if [ -z "$st1" ];then 

echo "err"

exit 1 

fi

echo ok

exit 1