Monthly Archives: July 2010

BackUpWordPress plugin produces tarballs containing duplicates

I’m using BackUpWordPress to do regular database and file tree backups of this blog. Unfortunately, there is a nasty bug in this plugin which may cause the tarball to contain every backuped file multiple times (to be precise, every file except the first one will go into the tarball exactly three times). The problem is that the . and ….. Read more »

Visualizing rpm dependencies with Graphviz

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Sometimes, rpm dependencies get rather complex. It’s not always easy for an rpm maintainer to keep track of the runtime requirements of his package and therefore, huge rpm dependency trees develop. And it’s even more difficult so see which packages get pulled by yum, because only a tiny part of those are actually listed as requirements in the spec file…. Read more »

Granting access to X server with xhost

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Every X server internally manages an ACL (Access Control List) of those hosts, that are allowed to connect. The server only authorizes connections from X clients, whose host is on that list and rejects access to all others. The xhost program is used to add or revert access to the X server for specified hosts. It’s also possible to specify… Read more »

Dealing with .rpmnew and .rpmsave files

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When an upgrade includes changes to a default configuration file, the package will write either a .rpmnew or a .rpmsave file instead of overwriting the configuration file on your system. Which file a package creates is up to the discretion of the package maintainer. From “Dealing with .rpmnew and .rpmsave files” By Bruce Byfield: An .rpmnew file contains the new… Read more »

Cleaning up locally-installed RPMs with package-cleanup

Sometimes, packages you never actually use get installed as dependency by yum (or even during initial installation by anaconda). package-cleanup is a great tool that helps you find packages not required by other packages. It it part of the yum-utils package which can easily be pulled with yum: 1. Find and review “unused” packages You can find packages not required… Read more »