systems-administration
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mod_headers Required when using WP Super Cache
If you’re using your own server to run WordPress and you’re using the WP Super Cache plugin to help with performance, you might see this warning at the top of your pages in the WordPress Dashboard: Under most circumstances, fixing this warning is very simple. Simply install mod_headers and reload or restart your Apache server.
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Could Apache keep Google’s regulators at bay?
Interesting article about Open-Source licensing, Google, and Apache. An enlightening article, although it could use a little more information about some of the key points. …because of Google’s open-source licensing, “others can use our software as a base for their own products if we fail to innovate adequately.” True. Google is clearly betting on its…
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Vyatta, an Open Source network router OS.
I’ve found one of the gems of the Open Source world, if you’re looking for a competitive and feature rich router, you should consider Vyatta. Recently I installed it and configured to be my home router. Its also worth mentioning that even though you don’t need much for your home network, Vyatta can also compete…
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SSH Remote Host Identification has changed.
I often encounter the annoying warning shown below. WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! It most often happens when the machine which I’m trying to connect has been re-installed. There are other reasons why you might get this but the root cause of it is exactly what the warning says. Watch out! someone could be…
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Alias your cd commands and save time
When you’re bouncing around from one directory to another in Linux or OSX, or even Cygwin in windows, remember you can use alias to save you time. For example, I’ve been working a lot on these two directories in my pxeboot server ((The xxxx is just a placeholder)). Typing those in each time, using tabs,…
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Fixing nextgen gallery after upgrade 1.4.1
Nextgen Gallery is awesome, it displays images in your WordPress installation in a way that is very customizable and using the plugin itself is a breeze. Recently it got updated to version ~~1.3.4~~ 3.1.5 1.4.1. If you’re using a custom template, this upgrade most likely broke your installation. The reason seems to be that the…
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Awk VS Sed
What’s the difference between sed and awk? I don’t know, I really don’t care too much, but I do care to know which one I should be using for different tasks. I do know that sed seems easier to use than awk. I may sometime get around to writing some tips, tricks and differences between…
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Jira installation notes
These are my notes to get Jira installed and working with a Crowd backend for authentication and single sign on. I’ve already shown you the notes to get Crowd and Confluence installed. Check out the previous articles in the series. As always, these are notes for reference and they may not work perfectly for you,…
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OS X Java update failed
Recently the update for Java on my Macs failed to install. This is the first time I see an update from Apple not work on my machines. This happened both on my iMac and on my MacBook Pro. To fix this, I got the update directly from Apple and installed it manually, you can find…
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Confluence and Crowd Installation notes.
Another round of Atlassian applications installations, this time only Jira and Confluence with a Crowd backend for single sign on. We’ll start with Crowd and Confluence, check out the series to find the Jira notes. Here are the notes I made as I went through this round of installation. It should be much simpler than…