Being able to work with the command line in Linux and use tools such as sed can be really powerful. We show you how you can match only the first occurrence of a string or regular expression using sed in Linux with Ubuntu. The example we use will be replacing the first time server only […]
Scripting
Using Python to List SSH Authentication Methods
In this module we will take a look at using Python to list SSH Authentication methods. There is nothing like making your server estate cybersecurity and compliant with your policies. Ensuring that SSH servers on out estate adhere to security guidelines allows peace of mind knowing we can reduce the likelihood of our servers being […]
Syntax Highlighting Perl Scripts
When you create you very own Perl scripts the big debate is to add .pl to the end or not! For example if you wanted to create a script to check the existence of a user in the Linux system you may want the program to be called check_user. You may want to call the […]
PERL 42 Word Challenge
It is 2019 and we are already nearly at the end of January. If learning Linux was your New Year’s resolution, how far have you got? Have your wheel’s stopped turning and are you becoming bogged down and not knowing where to go. At the start of any project it is often like this and […]
Using Grep
In this eGuide to using grep, Andrew Mallett, The Urban Penguin takes you through 20 pages of explanations and examples on this fabulous tool. Being able to quickly filter text at the command line is something a devop or administrator will need daily. No matter if you need to filter text from a file […]
SSH Connections using PERL and Net::OpenSSH
In this module we look at a common system administration task and the need to run commands across many servers. Sure we could do this with Puppet or a similar configuration management tool. Checkout my Puppet videos on Pluralsight. But if our needs are more ill-defined or irregular then making SSH connection with PERL and […]