Everyday Notes from a Unix Administrator. A website created to serve as online notes, documentation, tips and tricks for System administrators.
Configuring postfix relay for mail sending Ubuntu 16.04
Postfix can be used to send mails to an external SMTP relay which is helpful if you want to setupRead more.
Raspberry Pi Thin Client
This tutorial creates a Raspberry Pi, a low cost single board computer, which can be used as a thin clientRead more.
The Linux Filesystem Explained
Have you ever wondered what all the folders on the root (/) directory of the Linux filesystem are for? WhichRead more.
Comparing files using the diff command
The diff command outputs the differences between two files, line by line. For files that are identical it produces noRead more.
How To Tell If Your Linux Server Has Been Compromised
A server being compromised or hacked for the purpose of this guide is an unauthorized person or bot logging intoRead more.
How to effectively use the GREP command
Grep is a very important & powerful Linux commands. It stands for ‘Global Regular Expression Print’ & is used forRead more.
bash Tips and Tricks
I call these tips and tricks – “bash kung-fu”. You can save a lot of typing with these handy bashRead more.
17 Things about Security
A list for protecting yourself and others from the most common and easiest-to-pull-off security crimes. This article does not attemptRead more.
Test internet speed from the Command-line
You probably have heard and tried using speedtest.net to test you computer or smartphone internet speed. If you have yourRead more.
How to find out PID in Linux
Every Linux process has a process ID (PID) assigned to it. It is a unique identification number that is automatically assignedRead more.