The “Bash prompt” on the command line interface is that bit of text that precedes your commands. It is usually the username followed by the hostname on most systems, so the syntax might look something like user@linuxconfig$ for example. Suffice it to say, the default Bash command line prompt on many Linux systems is quite minimal.
We all very often use bash scripts to automatize boring and repetitive tasks. Sometimes in our scripts we need to ask
the user to perform one or more choices interactively: in this tutorial we will see how to use the Bash shell select statement to perform such operation in very few lines of code.
In this tutorial you will learn:
The objective of this guide is to install Go/Golang on Ubuntu 20.04 Focal Fossa Linux. Go also know as Golang, is an open source programming language developed by Google.
In this tutorial you will learn:
The objective of this article is to install Microsoft PowerShell on Ubuntu 20.04 Focal Fossa Linux. PowerShell is a task automation and configuration management framework, which includes the PowerShell scripting language.
In this tutorial you will learn:
Well you have written an awesome Bash script. It works perfectly and perhaps there is no need to add new functionality. Well, maybe not for now, at least! At this stage you are happy with the script. However, after few months you reopen your bash script again to add new feature and you get a headache to figure out on how the script actually works. Hence, you need to spend additional energy and time before you can actually start editing the script in order to add new feature.
Well, at this point you regret that you did not put some comments ( notes ) into the script to remind you of how the bash script is structured. Not only that Bash comments serve as excellent notes for you or anybody else who might work with your script they may be to some extend also used as a basic bash script debugging tool.
In this tutorial you will learn:
Ruby is a very flexible scripting language, it’s popularity well-earned by it’s power. In this tutorial we will install Ruby on a RHEL 8 / CentOS 8, and write the famous “Hello World” program to test that our installation is working as intended. Note however, that with all languages, Ruby’s capabilities are far more than simple text printing on the command line.
In this tutorial you will learn:
Perl is a well-known programming language with long development history. The same long history provides the countless modules written in it, and distributed in various channels throughout the World Wide Web. As with most programming languages, if you implement something that you find useful, and maybe write it in a generic way, there are high chances others would find it useful too.
If you share your work with others, they don’t need to re-implement the wheel, they can spend time on other tools, thus making the community as a whole richer, and we have found the spirit of open source with a short walk. But as many people write perl modules, and perl runs on just about anything, it can be hard to find the module you are looking for, let alone build it in your environment. And that’s where cpan comes into play. CPAN itself is a large perl module repository, the cpan tool is a client that is able to fetch and compile needed modules to the local system.
In this tutorial we’ll install cpan on a RHEL 8 / CentOS 8, run the initial configuration, and install a module with this tool’s help.
In this tutorial you will learn:
There are techniques from traditional programming environments that can help.
Some basic tools like using an editor with syntax highlighting will help as well.
There are builtin options that Bash provides to make debugging and your everyday Linux System Administration job easier.
In this article you will learn some useful methods of debugging Bash scripts:
The following article will provide you with the information on how to check Python Version on your operating system. You will learn how to check for python version using the python command as well as how to determine the python version programmatically, from python console and using python script.
