A decade-old massive and easy-to-exploit security hole (CVE-2021-3156) has been found in sudo allowing for full root access by any unprivileged system user. This...

Just a straightforward wrapper script for the unrar command that allows extracting specified filetypes from multipart archives while utilizing all available CPU cores. Seriously, who...

Let's say you want to see who was logged in on the server during last weekend. This includes users who, say, logged in on...

Just a quick note on how to (sort of) figure out when a server first came online. This can be useful to various folks...

I am not talking about hundreds or thousands of files. I am talking about hundreds of thousands. The usual "/bin/rm -rf *" may work...

A small collection of maybe helpful examples of how to use expect with Bash. This is a very useful tool, especially when writing a...

Just some notes on setting up temperature monitoring and alerting on CentOS/RHEL running on HP ProLiant. The first step is to install lm_sensors: yum -y...

Just some quick syntax for running multiple rsync threads in parallel using find and xargs. In many cases (especially if NFS is involved)  this can...

Just a quick script that will measure bandwidth utilization in KB/s for all NICs on your server over the specified period of time. You can...