Tag Sys Admin

GIT 101 - the beginners guide

Git is a distributed version control system supporting non linear workflows, that focuses on speed and data integrity. Version control...

Unix Archive Tools

The cpio(1) name is derived from CoPy In and Out. Cpio was standardized in POSIX.1-1988, but it was omitted from POSIX.1-2001 because of...

Bash Tip - Beware of spaces

Everyone knows that filenames and variables can contain spaces, but when it comes to writing a shell script most of the shell developers...

Bash Tip - The importance of testing that variables are defined.

When writing code it's important to make sure all the variables are defined. Using an undefined variable can lead to all sorts of...

Build you own stratum-1 NTP server for less than $100

You can build a highly accurate Stratum-1 NTP Server for less than $100 using an old Wyse WinTerm, a GPS and a few electronic components.

Using SSH with an SSH bastion

One of the tasks of system administrators is to secure the machines inside of their network. To do so you usually configure access lists...