script to check ssh connection and uptime

ssh_uptime_check.sh

#!/bin/sh

USR='username'

for host in $(cat host_list)
do
	sshpass -f pd_file ssh -q -o BatchMode=yes -o StrictHostKeyChecking=no -o ConnectTimeout=5 ${USR}@${host} exit
	let ret_code=$?
	if [ $ret_code -eq 5 ]; then
		echo "${i} Connection Refused!" $ret_code
	elif [ $ret_code -eq 255 ]; then
		echo "${i} server down!" $ret_code
	elif [ $ret_code -eq 0 ]; then
		echo "${i} is up and Connected!" $ret_code
		echo "uptime: `uptime | awk -F'( |,|:)+' '{
		    d=h=m=0;
		    if ($7=="min")
		        m=$6;
		    else {
		        if ($7~/^day/) { d=$6; h=$8; m=$9}
		        else {h=$6;m=$7}
		        }
		    }
		    {
		        print d+0,"days,",h+0,"hours,",m+0,"minutes."
		    }'`"
	fi

done