Daren Matthews

An NTP server can provide synchronised date and times for devices in a network. Since a router cannot be a Stratum 1 device (cannot connect to a Stratum 0 device such as a GPS clock), a router is not an accurate source of time information. If this is not important to you, then using a router as an NTP server may be acceptable. Read more…

If nslookup fails on CentOS, you may need to install bind utilities: Read more…

SIGTERM vs. SIGKILL

Sending signals to processes using kill on a Unix system is not a new topic for most systems administrators, but I’ve been asked many times about the difference between kill and kill -9. Read more…