missing arguments

wish I could have warning critical threshold, rewrote a simple version in bash 🙂

#!/bin/bash
#
#Felipe Ferreira Jan 2017
#
# First lets chceck if yum –security exists and works

#MAKE SURE yum-security is installed
yum –security version >/dev/null 2>&1 || { echo “I require yum-security but it’s not installed. Aborting.” >&2; exit 1; }

#CHECK FOR ARGS
if [[ $2 ]]; then
WARN=$1
CRIT=$2
else
echo “UNKONW – Please pass arguments, number of security patches missing it should warn or crit $0 ”
exit 3
fi

A=$(yum -C –security check-update |grep ” needed for security”)
C=$(echo $A|awk ‘{ print $1 }’)

if [ “$C” -gt “$CRIT” ]; then
echo “CRITICAL – $A | sec=$C”
exit 2
elif [ “$C” -gt “$WARN” ]; then
echo “WANING – $A | sec=$C”
exit 1
fi

echo “OK – $A | sec=$C”
exit 0