Bash/Shell scripting in Linux/Unix like OS
To reverse a string in the Bash shell, the most common and efficient method is using a for loop or, for a more modern approach, an external command like rev. Bash doesn’t have a built-in function specifically for string reversal, so you’ll typically use a loop to iterate over the characters. Method 1: Using a … Read more
You can extract substrings in the Bash shell primarily using parameter expansion, a built-in feature that is fast and efficient. Other methods include using external commands like cut, expr, and awk. Parameter Expansion This is the most common and recommended method for substring extraction. It’s built into the shell, making it very quick as it … Read more
You can split a string in Bash using a few different methods, each with its own advantages. The most common methods are using an array with the Internal Field Separator (IFS), using the cut command, and using parameter expansion. Using the Internal Field Separator (IFS) The IFS is a special shell variable that defines the … Read more
Hey there, fellow Linux enthusiast! After a long project, your file system can start to look like a digital junk drawer. You have got empty folders left behind from old experiments or finished tasks. How do you neatly clear them out? Enter the rmdir command! rmdir is a specialized Bash command specifically designed for removing … Read more
Imagine you are starting a fresh project, downloading a plethora of files, or just trying to keep your digital space neat. What is the initial step to organization? Making new spaces for your stuff! In the Linux terminal, that vital task belongs to the simple yet robust mkdir command. This post will serve as your … Read more
Ever needed your Bash script to ‘talk’ to you, displaying messages, instructions, or results? Or perhaps you just want to quickly print some text to your terminal screen? That’s where the echo command comes in – your voice in the command line! echo is one of the most fundamental and frequently used Bash commands. It … Read more
Ever feel like you are lost in a digital maze, searching for that one important file on your Linux system? Just like you navigate physical spaces, you need a way to move through your computer’s file system. In the Linux terminal, your most important navigation tool is the simple yet mighty cd command. The cd … Read more
Navigating a Linux system can feel like exploring a new city, and ls is your trusty map. Ever felt lost in your terminal, wondering where your files went? You are not alone! The ls command is one of the most fundamental and frequently used commands in the Linux/Unix terminal. It is used for listing directory … Read more