Have you ever come across a server that is doing a lot of traffic? Maybe you have logged in to see a process running at 100% CPU, so you know the culprit, but instead of kill -9ing it, wouldn’t it be great to see what exactly it is up to? Or even if you see [...]
Categories: CentOS,Code Samples,Linux,Shell,System Administration
Tagged: command line, Linux, network, Security, system admin, traffic
It is easy to do an in-place upgrade of Ubuntu Server from 8.10 ‘Intrepid Ibex‘ to 9.04 ‘Jaunty Jackalope‘. You can do this remotely over ssh or whatever you use to control your server. Best practices say to make sure to backup your server before doing the upgrade. I’ve done several servers this way with [...]
Categories: Linux,Shell,System Administration,Ubuntu
Tagged: System Administration, Ubuntu
Zabbix is an excellent system monitoring package. It does everything from basic availability checking to detailed system resource analysis. It is capable of graphing the variables pulled from the system, and alerting admins if there is a problem or something needed for attention. Once you have the Zabbix server set up, you need to install [...]
Categories: CentOS,Code Samples,Configurations,Linux,Programs,System Administration
Tagged: agent, alerts, monitoring, zabbix
As previously written on this blog, I have set up a display in our lobby at work to display the day’s current events and meetings using Ubuntu and a tiny PC. Since this is a display which is on all day, the screensaver and monitor blanking (and other Energy Star features) are all turned off. [...]
Categories: Code Samples,Hardware,Linux,Shell,Software,System Administration,Ubuntu
Tagged: display, energy, energystar, lobby, monitor, power, saving
Windows files and Unix files (Redhat, Ubuntu, etc) are encoded in different ways. Namely, the end of line that is a part of most files created in Windows is not compatible with Unix. You can usually see this because there is a ‘weird character’ at the end of each line. ‘cat’ does not show it, [...]
Categories: Linux,Shell,System Administration,Windows
Tagged: character encoding, dos2unix, end of line, recode
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