Well, not exactly “benchmarking” in the strictest sense, but interesting data I find nonetheless. Setting out on my voyage to learn more about filesystems that the Linux kernel supports, I went looking for which filesystem does the best job at managing space. No speed tests. No data integrity. No feature comparisons. [...]
Last night, Christer and I were playing with the Ubuntu 8.04 installer, trying to break it, and get any last bugs reported before final is released tomorrow.
What I noticed last night, during the install really surprised me. ReiserFS is a screaming filesystem compared to XFS. After doing the install 3 times on 2 [...]
As I’m sitting in the San Jose Airport, I’m reading the sfdisk man page to get a better handle on the command. I want to script setting up partitions, rather than the interactive fdisk. As I’m reading along, I got a chuckle out of the -f or –force switch:
[...]
Being an instructor for Guru Labs, I’m in training centers all over the nation. As such, I never know what hardware I’ll be facing, or for that matter, their network setup. This can be problematic, as setting up for class could present troubleshooting on my end before students arrive and class starts.
One of [...]
In my last post, I gave you a glimpse to runlevels, their purpose, and how they affect the overall operation of your box. Today, in this post, I am going to dig deeper into runlevels, as well as manipulating services in specific runlevels. I’m going to show you why you want to do [...]
As many of you are probably already aware, I’m a Linux trainer for Guru Labs. We do all Linux training, including Red Hat, Fedora, SUSE, and others. If your company is looking for good, solid Linux training, Gurus at Guru Labs are the cream of the crop, and I’d highly recommend it. [...]
From the terminal (emphasis mine):
aaron@kratos:~ 1268 % aptitude show aptitude
Package: aptitude
State: installed
Automatically installed: yes
Version: 0.4.6.1-1ubuntu3
Priority: important
Section: admin
Maintainer: Ubuntu Core Developers
Uncompressed Size: 9449k
Depends: libapt-pkg-libc6.6-6-4.5, libc6 (>= 2.6-1), libgcc1 (>= 1:4.2.1),
libncursesw5 (>= 5.6), libsigc++-2.0-0c2a (>= 2.0.2), libstdc++6 (>=
4.2.1)
Recommends: [...]
Disclaimer: I don’t know enough about Upstart to hold a low-level conversation about it. What I do know of Upstart is what I have read on the Ubuntu wiki, the Upstart FAQ and a few docs scattered here and there around the web. If I have misrepresented Upstart, its goals or intentions, or [...]
I was spending some time today on Wikipedia, reading the entry on Ubuntu, and something hit me- something which I’ve known for a long while. I decided to sit down and blog it for those who haven’t really thought about it. Maybe this post will catch you unaware, and maybe not.
Ubuntu is ONE [...]
Lately, I’ve been plagued with getting my zsh prompt exactly the way I want. I’ve been using the clint theme bundled with zsh, but it’s multiline prompt, and poor color choice started getting to me. So, I figured I’d change it and start with something simple, maybe mimicking bash a little, and slowly [...]
There is a very obvious bug when attempting to set SGID on a directory when you are not a member of the group that has ownership on that directory. For example, follow along with me in the following example on your box:
[Wed 08/01/30 06:55 MST][pts/1][x86_64/linux-gnu/2.6.22-14-generic][4.3.4]
<aaron@kratos:~>
zsh 162 % mkdir ~/tmp
[Wed 08/01/30 06:56 MST][pts/1][x86_64/linux-gnu/2.6.22-14-generic][4.3.4]
<aaron@kratos:~>
zsh 163 % [...]
Being an instructor for Guru Labs, I have the opportunity to not only teach Guru Labs courseware, but also contracted work with Red Hat, HP, IBM, Oracle and others. This week, I’m out in Atlanta, Georgia teaching the RH300 Rapid Track course for students to earn their RHCE. During one of the labs, [...]
Yet again, something amusing found in the man pages. Check out man (1) watch and search for the term ‘administrator’:
–snip–
You can watch for your administrator to install the latest kernel with
watch uname -r
(Just kidding.)
Oh brother.
When you travel as much as I do, you have the opportunity- nay, the responsibility- to read man pages. While sharpening the saw, so-to-speak, on increasing my teaching skills, I came across the following command:
[Fri 08/01/11 06:05 MST][pts/1][x86_64/linux-gnu/2.6.22-14-generic][4.3.4]
<aaron@kratos:~>
zsh 31 % who am i
aaron pts/1 [...]
