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March 2, 2022 – 2:00 pm

Books have been written on the subject of awk and sed. Here’s a small sample of commands I put together over the years that are useful for everyday system administration tasks. Most of these tasks …

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Home » Archive by Month

Article Archive for October 2015

Protected: Reverse SSH Tunnel Over SSL on RHEL

October 28, 2015 – 9:22 am
reverse_ssh_tunnel

There is no excerpt because this is a protected post.

Tuesday Morning Rant

October 27, 2015 – 11:27 am
centos_linux_0003

So I just got around to installing CentOS 7. What a pile of shit with bugs all over it. The installation GUI completely messed up network configuration. On the first try, the network config I …

Oracle Sun SPARC Server Quick Configuration

October 20, 2015 – 6:03 pm
sun_solaris_0003

In the following example we’re using a SPARC T4-2. These systems ship from the manufacturer with pre-installed Solaris 11. After the system has been racked and connected to primary and ILO networks, the first step is to …

Detecting Sun ILOM with NMap

October 13, 2015 – 10:57 am
sun_solaris_0002

This is an oddball tech note: how to detect Sun ILOM interfaces on the network using nmap. I needed to connect to one of the Sun boxes that dropped off the network, but couldn’t remember …

Upping the Soft nproc Limit

October 5, 2015 – 11:12 am
overloaded_0004

This is just a quick note to myself about increasing the “soft nproc” value. On one of the RHEL 6 Tomcat servers I got the following error when trying to “su – tomcat”:

Create ISO Images

October 2, 2015 – 5:56 pm
barrels

The genisoimage has been around for a few years, but is relatively little-known. It is a pre-mastering program to generate ISO9660/Joliet/HFS hybrid filesystems and is particularly good for creating portable data backups. Here are a …