Latest Posts
Getting Started with SELinux
SELinux was developed by the NSA to provide a highly secure computing environment. True to the GPL, they have made this code available to the rest of the Linux community and it is included as part of nearly every mainstream distribution.
A Small Algol 68 Project, Part 2
In memory of J. Kevin Douglas, a good friend and fellow fan of Algol 68 In the last article in this series, we described a...
About those livesys error messages
Do you see error messages about livesys and livesys-late on the console and in the systemd journal like those in Figure 1? Jul 10 21:38:33...
A Small Algol 68 Project, Part 1
In memory of J. Kevin Douglas, a good friend and fellow fan of Algol 68 In the last article in this series, we looked at...
Fedora Repo issues during updates
As I've been doing updates the last few days, I've noticed a problem with random systems where DNF5 indicates that no updates are available when...
The Linux Philosophy for SysAdmins, Tenet 24—Reality Bytes
Author’s note: This article is excerpted in part from chapter 26 of my book, The Linux Philosophy for SysAdmins, with significant changes to update some...
How to fix unresolvable file conflict errors upgrading or installing software RPMs
I install updates on a pretty regular basis and -- most of the time -- they install without a problem. By updates I mean installation...
The Linux Philosophy for SysAdmins, Tenet 23—Support your Favorite Open Source Project
Author’s note: This article is excerpted in part from chapter 25 of my book, The Linux Philosophy for SysAdmins, with significant changes to update the...
Short report on the Perl / Raku Conference
This past weekend I attended the Perl / Raku conference in Greenville, SC, USA. It was a great weekend as I met a couple old...
Thinking about Algol 68
In memory of J. Kevin Douglas, a good friend and fellow fan of Algol 68 I took my first computer science course in my second...
The Linux Philosophy for SysAdmins, Tenet 22—Mentor the young SysAdmins
When I first started, I was a young and innocent SysAdmin. I was fortunate because I worked at a couple different jobs where other, seasoned SysAdmins were willing to mentor me and encourage me. None of them laughed at me when I asked what must have seemed to them to have answers that were blindingly obvious. None of these patient SysAdmins ever told me to RTFM.
Do I have enough space for that?
A little scripting goes a long way to make sure you won’t run out of space with an automated process.
Strange problems with switches
Network switches are supposed to be simple devices that work at TCP/IP layer 1, the hardware layer. As far as the network is concerned, and...
Nextcloud is a snap
Recently I have been tasked with assisting a local medical office with finding a new way to store medical images securely. The office needed a...
Website problems circumvented
We had a problem with the Both.org website this morning. After a bit of problem determination I discovered that the WordPress theme we're using seems...