telnetwatch

#!/bin/bash
# This script is used for getting linux's watch like functionality with cisco telnet prompt

. ~/.private/cisco_pw # should contain PASSWORD variable

export SEXPECT_SOCKFILE=/tmp/sexpect-telnetwatch-$$.sock
sexpect spawn telnet $1
sexpect expect -cstring 'Username:'
sexpect send -enter $USER 
sexpect expect -cstring 'Password:'
sexpect send -enter $PASSWORD

COUNTDOWN=9999
while [[ $COUNTDOWN != 0 ]]; do
   sexpect expect -cstring '>'
   sexpect send -enter "$2" # the command itself
   let "COUNTDOWN--";
   echo -e "\nCOUNTDOWN is $COUNTDOWN" >&2
   sleep 1;
   clear 
done

# Usage:
# $1 - hostname on which to perform commands
# $2 - command string
# example:
# ./telnetwatch Q224 "sh mac add int Gi0/5"

# TODO
# I should handle .sock files in /tmp somehow. Probably, script should catch ctrl+c signal and remove the sock file.