clogin script to crawl the routers in the array given on line 3. Assumes working .cloginrc. Has progress bar.

TCAMcheck.sh

#!/usr/bin/env bash

function aboutMe {
 echo -e "\n\tTCAMcheck.sh v. 2013-06-20"
	echo -e "\tPull out L3 TCAM load from 760x routers and show more than $warningThreshold% load"
	echo -e "\n\tExample:\n\n\t\t`basename $0` \033[1;31mdr1.hors dr6.hors router3 router4\033[1;0m\n"
	echo -e "\n\tWhen run from the command line, it will update your screen/byobu title line and show you the results in less"
	echo -e "\n\tIt even has a progress bar!"
	echo -e "\n\tIt *should* play nice with pipes and crontab, but YMMV"
	echo e- "\n\tAlso, it doesn't tell you when it can't reach a router."
	echo -e "\n\n"
	exit 0
}


function showBar {
	percDone=$(echo 'scale=2;'$1/$2*100 | bc) # calculate percentages based on the two command line arguments supplied
	barLen=$(echo ${percDone%'.00'}) # set total bar length - remove redundant zeroes
	bar='' # zero out done bar
	fills='' # zero out undone bar

	for (( b=0; b<$barLen; b++ )) 
	do
		bar=$bar"=" # fill out the done bar
	done

	blankSpaces=$(echo $((100-$barLen))) # define how many undone indicators to use

	for (( f=0; f<$blankSpaces; f++ )) 
	do
		fills=$fills"-" # fill out the undone bar
	done
	clear # clear screen 
	echo '['$bar'>'$fills'] - '$barLen'% - '$currentRouter # show all at once - done, current progress, undone, percentage, router name
}

function doStuff() {
	# Housekeeping
	touch $file
	echo "" > $file
	counter=0

	if [ ${#routers} -eq 1 ]; then
		echo -e "Trying to poll ${#routers[*]} routers:\n$@" >> $file
	else
		echo "Trying to poll ${#routers[*]} router: $@" >> $file
	fi
	echo -e "+------------------------------------------------------------------------------------+"
	echo -e "| Empty lines are good! This script only outputs if the result is more than $warningThreshold% load |"
	echo -e "+------------------------------------------------------------------------------------+"
	for currentRouter in ${routers[*]}
	do
		if [ -z "$PS1" ] && [ -t 1 ]; then # If this is an interactive shell and not in a pipe
			showBar $counter ${#routers[*]} # then show a progress bar
			if [ -n $STY ] ; then # if it is in screen/byobu, also update the title
				echo -n -e "\033kChecking TCAM for $currentRouter\033\\"
			fi
		fi
		 counter=$[$counter+1]
		 echo "----- $currentRouter -----" >> $file
		 clogin -c "show platform hardware capacity" $currentRouter | grep --after-context=3 "L3 Forwarding Resources" | awk -v threshold=$warningThreshold '{
		    if(int($2)==72 &&
		        int($9)>=threshold ||
		        int($1)==144 &&
		        int($8)>=threshold)
		        print;}' >> $file # fetch "show platform hardware capacity", only show interesting lines, then abuse awk to only show troubling lines
	done
	if [ -z "$PS1" ] && [ -t 1 ]; then # If this is an interactive shell and not in a pipe
		if [ -n $STY ] ; then # if it is in screen/byobu, also update the title
			echo -n -e "\033kTCAM sweep results\033\\" 
		fi
		less $file # show file contents
		if [ -n $STY ] ; then # if it is in screen/byobu, also update the title
			echo -n -e "\033k$(hostname)\033\\" 
		fi
		clear
	else
		cat $file # You just want to watch the world burn, don't you?
	fi
}

routers=( "$@" )
file=~/temp.txt
warningThreshold=80

case $# in
  0)
    aboutMe
    ;;

  *)
    doStuff "$*"
    ;;

esac