Mike, attached is the script I used to generate the list of RTC users and their last login.

Here is the entry I have in the crontab file to run it monthly:

10     0      1      *      *      /home/jazzadm/bin/list-rtc-logins 2>&1 | mail -s "Recent RTC user logins sorted by user" EmailAddress@OurCompany.com

The script file, titled "list-rtc-logins":

#!/usr/bin/env bash
trap "exit 1" 1 2 3 15
function usage {
        echo "Usage: $(basename "$0") [-d] [-u]" 1>&2
	echo "	-d	Sort by date" 1>&2
	echo "	-u	Sort by user" 1>&2
        exit 2
}
SFLAG=+1
while getopts du OPTCHAR; do
	case $OPTCHAR in
	d)	SFLAG=+2;;
	u)	SFLAG=+1;;
	?)	usage;;
	esac
done
shift $(($OPTIND - 1))
#echo "Remaining arguments are: $*"
case $# in
0)     ;;
*)      usage;;
esac
LOGFILES=$(find /opt/app/jazz/server/tomcat/logs -name localhost_access_log.\*txt)
GZLOGFILES=$(find /opt/app/jazz/server/tomcat/logs -name localhost_access_log.\*gz)
(zcat $GZLOGFILES; cat $LOGFILES) \
| sed -e '/buildman/d' -e '/^-/d' \
	-e 's/^[0-9]*\.[0-9]*\.[0-9]*\.[0-9]* - //' -e 's/ [+-][0-9].*//' \
	-e 's/\[//' \
	-e 's;\([0-9][0-9]\)/Jan/\([0-9][0-9][0-9][0-9]\).;\2-01-\1T;' \
	-e 's;\([0-9][0-9]\)/Feb/\([0-9][0-9][0-9][0-9]\).;\2-02-\1T;' \
	-e 's;\([0-9][0-9]\)/Mar/\([0-9][0-9][0-9][0-9]\).;\2-03-\1T;' \
	-e 's;\([0-9][0-9]\)/Apr/\([0-9][0-9][0-9][0-9]\).;\2-04-\1T;' \
	-e 's;\([0-9][0-9]\)/May/\([0-9][0-9][0-9][0-9]\).;\2-05-\1T;' \
	-e 's;\([0-9][0-9]\)/Jun/\([0-9][0-9][0-9][0-9]\).;\2-06-\1T;' \
	-e 's;\([0-9][0-9]\)/Jul/\([0-9][0-9][0-9][0-9]\).;\2-07-\1T;' \
	-e 's;\([0-9][0-9]\)/Aug/\([0-9][0-9][0-9][0-9]\).;\2-08-\1T;' \
	-e 's;\([0-9][0-9]\)/Sep/\([0-9][0-9][0-9][0-9]\).;\2-09-\1T;' \
	-e 's;\([0-9][0-9]\)/Oct/\([0-9][0-9][0-9][0-9]\).;\2-10-\1T;' \
	-e 's;\([0-9][0-9]\)/Nov/\([0-9][0-9][0-9][0-9]\).;\2-11-\1T;' \
	-e 's;\([0-9][0-9]\)/Dec/\([0-9][0-9][0-9][0-9]\).;\2-12-\1T;' \
| awk '
{
        name = $1;
        dt = $2;
        if (a[name] < dt)
		a[name] = dt;
}
END {
        for (x in a) {
                printf "%s\t%s\n", x, a[x];
        }
}'  | sort -k $SFLAG
exit 0