Wood's Words

Articles

How to suppress rkhunter false positives due to zypper package updates on openSUSE 15.4.

I recently wrote a script called check_jvm_memory to monitor JVM memory usage with jstat and Check MK. Let’s go over how to use it.

In a recent article, I showed how to print a script’s output to both a log file and stdout. Some of you might be wondering why I used a { group command; } piped into tee for this, rather than >(process substition). Let me explain.

Let’s look at a few more patterns that a bash shell script can use. I’ll show how a script can drop its own privileges, run with a lower priority, obtain a lock file¹, and create a temp file.

Here’s a few patterns I use to send a bash script’s output to a log file, to syslog, or as an email notification.