Iam trying for telnet script for n number of devices at a time Im able to do telnet for a single system, but if i want to do for multiple systems then how i need to do could any help me out in writong this script. for i in `cat /u01/home/bprakas/tel`;do echo $USERNAME echo $PASSOWRD USERNAME=xxxxxxx PASSWORD=xxxxxxx telnet $i done Banu Prakash

Look into expect. http://expect.nist.gov/FAQ.html

Hi, Try something like this. The file "hosts.txt" looks something like this: hostname1 hostname2 hostname3 10.240.5.47 . . . #!/bin/ksh export USERNAME=xxxxx export PDW=xxxxxxxx cat hosts.txt | while read H do ( echo open $H sleep 1 echo $USERNAME sleep 1 echo $PDW sleep 1 /somedir/some_script.sh 2>&1 > /dev/null echo exit ) | telnet done Hope this helps