If you're running a new CentOS 6 server, depending on how it was setup, you might be missing whois:
yum install bind-utils jwhois
Solution to a discrepancy between free space as shown by `du` and `df`.
This is a small tutorial or how-to on how to install node.js on a cpanel box. Note to all that setting up an EC2 instance on Amazon and getting Node.js up and running was WAY easier than doing this on a cPanel box.
If you are planning on using Math in mediawiki, and you have everything installed (Math, math, texvc, latex, dvipng) but you still get the error:
Failed to parse (PNG conversion failed; check for correct installation of latex, dvips, gs, and convert)
There is one last step that might need to be done. You will need to generate a latex.fmt file.You can do this with the command:
There is a good conversation about it over here.
Today, for the first time on one of our servers, I was unable to restart Apache. Running a configtest showed no errors, so something else was up. Looking in the Apache error logs, there was a line: "No space left on device: Cannot create SSLMutex".
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