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How to Use iptables on Red Hat Linux…

Just helped set up a Red Hat Enterprise Linux 7 server. The firewall is handled by firewalld on rhel 7 by default. To use your old iptables rules, you have to disable firewalld and enable…

Samba Problem after Updating to 3.6.23-30

One CentOS 6 Linux server got the newest Samba 3.6.23-30 update last week. This is a critical update to fix the Badlock bug. After applying the update, we had some machines which could not connect to the…

How to Setup AFP Service on Scientific Linux…

I setup Samba service for a group of Mac users for file sharing. After a couple of months, the users are not satisfied with the performance and constant problems with permissions. I then setup AFP…

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How to Install Numpy and Scipy on Rocks…

I recently installed Numpy and Scipy on a cluster built with Rocks 6.1.1. The guide I used was based upon this wiki page. Python was installed under this directory: /share/apps/python . Here are the steps…