I'm using fail2ban to keep the bandits off my server. It's great!
But there are so many bots that just keep poking at the server that I want to permanently ban them after a few repeated attempts.

Here's a small script I wrote to wait until no jobs are running in Workload Scheduler.

I've been looking for a way to give my students occasional access to system administration functions of the Linux-based servers.

Want to ssh to one of your Workload Scheduler agents, but don't remember the nodename or hostname? Or, you know the name, but workstation name is much shorter? Try this:

We saw this question on one of the online Workload Scheduler forums recently.

The Arduino package contains an IDE that can be used to develop and upload code to the micro-controller. A current arduino package is available in the repositories of most Linux distributions (Ubuntu and Fedora, anyway).

I couldn't find the preferences menu for Nautilus file manager in Gnome 3. But the gsettings command works :-)

To set the default sort order to the file name:

gsettings set org.gnome.nautilus.preferences default-sort-order name

To show directories first:

Even though IBM Workload Scheduler has lots of built-in run cycle settings (like 6th-day-of-the-month, or 2nd-Wednesday), these do not accommodate work days. To do that, you must use two calendars:

Sometimes your IBM Workload Scheduler job streams suddenly quit running. Maybe it's because the calendars that are used to schedule them have no future dates in them.