Mini Shell

#!/bin/bash

#load functions + banners
if [ -f /opt/sharedrads/radsfunctions.sh ]; then
    source /opt/sharedrads/radsfunctions.sh
else
    source /opt/dedrads/radsfunctions.sh
fi

CHECKUSER=$1
SESSIONID=$2

function pusage(){
echo
echo "Usage:"
echo "   check_crons [username]    - displays the crontab file for a user"
echo "   check_crons --recent      - count frequency of recent cron executions"
echo "   check_crons --full        - print last 50000 lines of cron log sorted by user"
echo
}

if [ -z $1 ]; then
	pusage
	exit;
fi

if [ "$1" == "--help" ];then
	pusage
	exit;
fi

if [ "$1" == "--full" ];then
       	echo "Displaying the last 50000 lines of /var/log/cron sorted by user:"
	echo
	sudo tail -50000 /var/log/cron | sort -k6
	exit;
fi

if [ "$1" == "--recent" ];then
	echo "Displaying users with the most cronjob executions as found in /var/log/cron:"
	echo
	sudo cat /var/log/cron | awk '{print $6}' | sort | uniq -c | sort -nk1
	exit;
fi


if [ -z $2 ]; then
SESSIONID=`date +%s`
DETAILED=YES
fi

EMPTY=NO

cat /var/spool/cron/$CHECKUSER 1> /tmp/.$SESSIONID 2> /dev/null || EMPTY=TRU

if [ "$EMPTY" == "NO" ];
then

echo
echo -e "\033[40;37;2m RADS has detected these custom cron jobs currently enabled for this account \033[0m"

if [ "$RADSCOLORS" == "off" ];
then
    	echo -en "\033[0m"
else
    	echo -en "\033[29;30;1m"
fi
	#displays crons
	cat /tmp/.$SESSIONID
	echo

#clear colors
echo -en "\033[0m"

fi

#no session ID was received earlier, we were invoked directly, lets display add'l history:
if [ "$DETAILED" == "YES" ]; then
echo -e "\033[40;37;2m  Displaying cron execution history for user's scheduled jobs \033[0m"

if [ "$RADSCOLORS" == "off" ];
then
        echo -e "\033[0m"
else
        echo -e "\033[34;1m"
fi

grep $CHECKUSER /var/log/cron
echo -ne "\033[0m"

rm -f /tmp/.$SESSIONID

fi