The uname shell command will print out in any Debian or RedHat variant like Ubuntu and Centos Linux much of the main system information, here
You have a 23.34% Chance of Guessing a Four Digit Pin Combination
According to Datagenetics 10.71% of 4 digit passcodes are 1234. Data Genetics did some number crunching on ATM pin data, not sure how they got
How to View Processes and Their Respective Ports on Linux and OSX
If you want to see what processes are listening on what ports these you can use the linux command lsof and netstat. Below are a
How to Watch For a Process to End on Ubuntu Linux
I wanted to send myself a text when a long running process was done so I needed a command that would watch for a process
How to Concat a Bunch of Files Together
Here are 2 different shell commands using cat. These examples would allow you to stack files into a new file concatenating them together. Useful for
Linux Command Line Example To Remove Emails From a Text File
sed is a really powerful Linux command line utility. It can in a one line do what would take sometimes 20-30 lines of code in
How to Recursively Extract All Nested Zip Files in Linux
I needed to recursively unzip a big mess of nested zip files. This shell command does the trick, it also preserves the directory structure.
How to Setup Password-less Loggin with SSH Keys
Having to type in passwords manually all day long into servers you manage is a pain. You should be using ssh keys, they’re more secure,
This is the Best Command to Upgrade Ubuntu
This is the only command I’ll use to upgrade or update the OS on my Ubuntu instances, any version. This doesn’t upgrade to the next
How To Easily Parse Incoming Emails From Postfix
Step 1: Postfix Config I’m going to assume you have postfix and your domain dns already setup. Adding an incoming email that you can parse
