How to Compare Strings in Bash With If Statement [6 Methods]
String comparison is the process of checking if a string is the same length as another string, if it’s longer …
Bash Scripting
[Resolved] ‘Unary Operator Expected’ Error in Bash
The ‘Unary Operator Expected’ error in bash indicates that the command or operator expects a single parameter, but the parameter …
An Overview of Bash Comparison [Conditional] Operators
Bash Comparison Operators are fundamental elements in scripting that allow Bash programmers to compare values and make decisions based on …
Glob Expansion in Bash
Glob expansion is one of the elegant techniques in Bash to find files or match pathnames. There are a few …
How to Compare Numbers in Bash With If Statement [2 Methods]
Compare Numbers in Bash scripting is essential for a wide range of tasks, including arithmetic calculations and logical decisions. Therefore, it …
How to Use Double Pipe “||” in Bash [3 Examples]
The double pipe (‘||’) is a logical operator that is often used in various programming and scripting languages, including Bash. …
Parameter Expansion in Bash [3 Main Types]
Parameter expansion is one of the key concepts in Bash scripting. It is useful to find, replace or modify the …
Redirect Stderr to Stdout in Bash [5 Examples]
In Bash, it’s crucial to manage both the standard output (stdout) and standard error (stderr) effectively. By default, stdout displays …
Loops in Bash
A Bash loop is a control structure that allows you to execute a block of commands or statements repeatedly in …
Variable Substitution in Bash [Replace Character & Substring]
Bash programmers do the replacement, the substitution, and the removal of the bash variable too often. It helps them print …
Unary Operators in Bash
Unary operators in Bash are operators that perform operations on a single operand, and they are often used for testing …
How to Check If a String is Empty or Not in Bash [5 Methods]
To check whether a string is empty, compare the string with empty string (” “): if [ "$string" == " …
If Statement in Bash
The if statement is a primary and powerful control structure that creates optimized decision-making logic and manages the scripts’ flow. …
Bash Conditional Statements
In Bash scripting, sometimes you might face a situation when you have to make logical decisions by satisfying certain conditions …
How to Get the Length of an Array in Bash? [Complete Guide]
You can use the following methods to determine the length of an array in Bash: Using Length Expression ${#array[@]}: echo …
How to Check If An Input Argument Exists in Bash [4 Methods]
When writing a bash script, it is a common task to check the input argument in bash to handle the …
Usages of “NOT (!)” Operator in Bash Scripting [4 Examples]
The “!“ (NOT) operator in Bash scripting is a logical operator used to invert the exit status of a command. …
Check If a Variable Exists in Bash Using If Statement
In Bash, the “if else” statement is used to control the flow of execution of the bash script statements. Within …
Declare Array in Bash [Create, Initialize]
Bash, a widely popular and powerful shell in the world of Linux, offers diversified ways to ensure efficient data management …
Usage of “OR” Operator in Bash Scripting [2 Cases]
Bash includes a range of logical operators that help to set multiple conditions within a bash script. Among these, the …
