!/bin/sh

function checkURL() {

statements

checkUrl=$1 echo 'check url start ...' judge=($(curl -I -s --connect-timeout 2 $(checkUrl)|head -1|tr " " "\n")) if [["${judge[1]}" == '200' && "${judge[2]}" == 'OK']] then action "${checkUrl}" /bin/true else action "${checkUrl}" /bin/false echo -n "retrying again ..."; sleep 3; judgeagain=($(curl -I -s --connect-timeout 2 ${checkUrl}|head -1|tr "\r" "\n")) if [["${judgeagain[1]}"=='200' && "${judegagain[2]}"=='OK']] then action "${checkUrl},retried again" /bin/true else action "${checkUrl},retried again" /bin/false fi fi sleep 1; }

usage method

checkURL http://abcd.com