- Finding out what hardware is in a box with lshw
Joor Loohuis, 2011-01-04
Sometimes you need to know what hardware is in a system, but you don't have specs, or you don't have access to the system. Being able to extract this information directly from the system would then be extremely useful, and this is exactly what lshw does.
- Getting more out of logwatch
Armijn Hemel, 2010-05-11
Watching your logs is a must for every administrator, but if there are vast amounts of information at once it can be easy to miss things. Serving the information into tiny bite size pieces makes it easier to spot the right things.
- Automated certificate expiration checks on CentOS
Joor Loohuis, 2009-12-20
It is essential to keep track of the expiration dates of SSL certificates, and so it's useful to have a periodic check on all certificates in use on a system, that will alert systems administrators when a certificate is about to expire. This article shows one way of setting up such a procedure for CentOS and other RHEL derivatives.
- Stresstesting IMAP clients
Armijn Hemel, 2009-10-04
In this blogpost we describe research we did into performance of several graphical mail programs on Linux when dealing with large amounts of email messages using IMAP.
- DNS names matter
Armijn Hemel, 2009-09-30
When naming a local network it matters how you name the network. We found out the hard way.
- Making your servers a bit more "green" with smart system adminstration, part 3: the right tool for the right job
Armijn Hemel, 2009-09-26
"Green IT" can only work if you have a combined approach of optimization on all levels. System administration can play an important role. Even more important is choosing the right programs to solve your problem.
- Disabling the touchpad while typing on Linux
Joor Loohuis, 2009-09-22
For non touch-typists, the touchpad or trackpad may be inadvertently triggered while typing, causing the cursor to be repositioned, with various consequences. Fortunately, a little tool exists for Linux that disables the touchpad while typing, preventing this.
- Making your servers a bit more "green" with smart system adminstration, part 2: tools
Armijn Hemel, 2009-08-12
"Green IT" can only work if you have a combined approach of optimization on all levels. System administration can play an important role. What you need is a good set of tools.
- Quick and dirty yum checks
Armijn Hemel, 2009-08-02
As a system administrator you want to be on top of your systems when it comes to security. You need to know when there are security updates you are interested in, so you can act on them.
- Installing Fedora 11 on an ASUS Eee Box
Armijn Hemel, 2009-07-20
The ASUS Eee Box is a nettop machine. Installing Linux on it is a bit of a challenge, because the machine does not have a DVD-player. With the right tools it is nevertheless quite easy.
- Fighting spam with greylisting
Armijn Hemel, 2009-05-13
Spam is one of the number one oline irritations for people. There are some effective ways to get rid of a lot of spam, at least until spammers catch up again. One of the most used methods right now is greylisting, which yields really good results, but at a price.
- Sysadmin war stories: (disk)size does matter
Armijn Hemel, 2009-04-26
When you have a RAID system you need to keep a few things in mind about disk sizes and never use the full disk. Here is why.
- Nagios checks for failed RAID disks
Armijn Hemel, 2009-04-15
- How to use obscurity to improve security (a tiny bit)
Armijn Hemel, 2009-04-10
- Sysadmin war stories: when the RAID fails
Armijn Hemel, 2009-04-04
- Minimizing Apache httpd downtime with logrotate
Armijn Hemel, 2009-04-03
- Cheap MP3 players and Linux
Armijn Hemel, 2009-04-02