Category Archives: Enterprise Linux

Everything about RedHat, Centos, ScientificLinux …..

yum behind proxy gets “No more mirrors to try”

Have you ever had the problem with “No more mirrors to try” when behind a caching proxy? Especially with rpmfusion? You tried yum clean all, and still you are not able to download the xml or sqlite db? To fix … Continue reading

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Oracle Linux UEK broken

Hi, after my post Centos vs. ScientificLinux  which included Oracle Linux, I played around with OL6. The default kernel running is the “Unbreakable Enterprise Kernel” (UEK). This kernel is based on 2.6.39 and is currently the only Linux kernel that is … Continue reading

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Centos vs. ScientificLinux

I’ve been asked by a lot of people why I switched from Centos to ScientificLinux. My feeling was that ScientificLinux delivers security updates faster and more reliably, but feeling is not a good adviser when it comes to security. So … Continue reading

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Find deleted files that are still in use

When you disc is full and you delete stuff and the disc is still full, have a look at delete files that are still used by a process. Use the command lsof +L1 for this.

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sort -h

A friend  just showed me this cool new option for sort. You now can sort with -h, which works great with du -h. du -hs * |  sort -h Available since RHEL6 and current Fedora. Sorry no RHEL5.

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Weekly Series: Tools you need to know

I wanted to write a weekly series for years. A series of all the cool tools that I show to people very  often and allways create a jaw drop. Thanks to Michael for asking the question that reminded me of … Continue reading

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Update RHEL5 to RHEL6

Officially Red Hat does not support updates from RHEL5 to RHEL6. If you don’t care about support, or you are using Centos or ScientificLinux this is for you. But as always on the internet, I don’t give any warranties and … Continue reading

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RHEL/Centos to ScientificLinux

Hi, You don’t want to wait for Centos 6.1 or your RedHat 6 entitlement is running out? This howto is about moving to ScienticLinux. 1a.) (for RHEL) rpm -e redhat-release-server redhat-indexhtml  yum-rhn-plugin –nodeps 1b.) (fpr Centos) rpm -e centos-indexhtml centos-release –nodeps … Continue reading

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