SARG Debian 6 Squeeze

# echo "deb http://backports.debian.org/debian-backports squeeze-backports main" >> /etc/apt/sources.list
# apt-get update
# apt-get install sarg

#vi sarg.cron.sh

#!/bin/bash
YESTERDAY=$(date --date "1 day ago" +%d/%m/%Y)
sarg -f /etc/sarg/sarg.conf -d $YESTERDAY-$YESTERDAY

#crontab  -l
00 01 * * * /etc/sarg/sarg.cron.sh

Pronto!