This covers topics and articles related to shell-scripting in Linux.
![Bash Trap Signals | Capture CTRL+C [Practical Examples]](https://www.golinuxcloud.com/wp-content/uploads/bash_capture_ctrl_c-300x157.jpg "Bash Trap Signals | Capture CTRL+C [Practical Examples]")
Why do we need to trap signals when executing code? While your program is running, if you press Ctrl-C or Ctrl-\, your program terminates as soon as the signal arrives. There are times when you
Getting started with until vs while loop in Bash A while loop in bash works similarly to those in other programming languages such as C, Python, etc. A while loop will evaluate a condition and
How to increment variable in bash shell script? How to add 1 to a variable for every for loop? How to increment counter in bash? How to perform bash variable plus 1? In this tutorial
How to pass and store arguments to shell script? How to parse input arguments inside shell script? How to pass arguments to a function inside shell script in bash? How to read command line arguments
How to concatenate strings with underscore, newline, whitespace or any other character in bash? How to append substrings in a string in bash or shell script? How to append starings in a variable using for
In this tutorial we will learn about getopts in bash or shell programming language. getopts is short abbreviation for "get the options" which you have supplied in the form of flags to the script. It
We have different configuration files which are used to setup system wide configuration. But we always have some requirement to setup user specific customization such as umask, alias, PATH variable etc. In such case we
In this tutorial I will cover different attributes you can use in bash or shell scripting to check against files and directories. You can use bash conditional expressions with [[ ]] or use test with
I am quite sure in almost all the scripts we always end up with one or more conditional checks which requires if and else statement. So bash is not different and even in shell scripting
New to bash or shell scripting? Let's start learning. Bash scripting can be considered the first step to learn programming languages. You may be in any IT stream but there will come a point in
Using bash while loop has it's own advantages compared to any other loops. How do you perform a certain task repeatedly in Linux or Unix environment? For example, how can you monitor a log file
I get this question a lot from many users, how can I run a certain command in a loop for a defined period of time? Or how can we iterate a task over a range
In my earlier article I gave you an overview and difference between strings and integers in bash. Now there are different comparison operators which can be used to compare variables containing numbers, which we will
How to create array from string with spaces? Or In bash split string into array? We can have a variable with strings separated by some delimiter, so how to split string into array by delimiter?
It is a normal or I would say daily use case for a Linux developer to work on a script which requires comparison of strings. But I have seen many people tend to get confused