Month: March 2008


How to rebuild the RPM database for Linux Centos 5

Had problems with our RPMs and our sys-admin Tim Hass came up with the perfect answer ! First of all You just need to be sure that no rpm processes are running! Then delete /var/lib/rpm/__db.*


Egrep – Helpful linux command reference

While many people use the grep command through a pipe | there are more efficient ways of using it. I have nearly killed a server on many occasions by running cat filename |grep some-term while

DDOS check via number of connections

DDOS check via number of connections A quick and usefull command for checking if a server is under DDOS is That will list the IPs taking the most amount of connections to a server. It