1. UNIX for Advanced & Expert Users

what is the difference between white box and black box testing? (1 Reply)

2. UNIX for Dummies Questions & Answers

first time use (0 Replies)

3. Shell Programming and Scripting

#!/bin/bash ip=$1 if ; then echo "U must enter ip as argument: $0 " exit 1 fi testip=`echo $ip |grep -E "^((||1{2}|2|25)){3}(||1{2}|2|25)$"` if ; then echo "Wrong ip adress" exit 2 fi ping -c 2 $ip 2>&1 >/dev/null if ; then echo "$ip is UP" else echo "$ip is... (2 Replies)