I prefer this updated version:

#!/bin/bash

check=$1
maxage=30
file='/tmp/zimbra_status'

#check if file exists
if [[ -e $file ]]
then

OLD=`stat -c %Z $file`
NOW=`date +%s`

# if older then maxage, update file
if [[ `expr $NOW - $OLD` -gt $maxage ]]
then
sudo -u zimbra /opt/zimbra/bin/zmcontrol status > $file
fi

else

sudo -u zimbra /opt/zimbra/bin/zmcontrol status > $file

fi

status=`cat $file |grep $check|awk '{ print $2 }'`

if [[ $status != "Running" ]]
then
echo 0
else
echo 1
fi