CRONTAB

shutdown ur pc

 at 11pm


add this line using          

crontab -e

0  23  *  *  *   /sbin/init 0 


squid log file backup

at 1 am
00 01  * * *  /usr/local/squid/sbin/squid -k rotate


squid conf file reconfigure

at 7.30 pm 

30 19 * * * root /bin/cp -f /home/support/squid-rnd-n.conf /usr/local/squid /etc/squid.conf; /usr/local/squid/sbin/squid -k reconfigure