Posts

Disable IPv6 on Redhat RHEL4 First you remove this line from /etc/modprobe.conf if this line exists. alias net-pf-10 ipv6 Add the following line to /etc/modprobe.conf alias net-pf-10 off Reboot the...
Listen to network traffic using tcpdump Please note that you have to be the root user to use this command because it puts the network card in promiscuous mode. # tcpdump -i eth0 -A -s 0 udp port 1514 and host...
Enable query caching in mysql Query caching is a way to increase the performance of mysql by caching database queries. It’s quite easy to do and only requires to edit one file, in Debian it’s called...
Convert unix timestamp to date

date -d @1221256800 "+%Y-%m-%d %T" 2008-09-13 00:00:00 Convert a date (YYYYMMDD) to unix timestamp # date -d "20080913" +%s 1221256800