How to Parse Optional Arguments in Bash Script [2 Ways]
A fully functional Bash script may require optional arguments. They provide flexibility and customization of a script. Positional parameters are …
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[Solved] “bash: Argument list too long” Error
The “Argument list too long” is an error in Bash shell. Users often encounter the error while executing commands with …
How to Use “getopts” in Bash [Complete Guide]
The getopts command is widely popular for parsing command-line options and arguments. However, unlike many other Bash built-ins, it is …
How to Use OPTARG in Bash [3 Practical Examples]
The getopts (get options) is a built-in command Bash shell. The OPTARG variable in Bash is one of the few …
How to Pass Array as an Argument in Bash Function? [3 Ways]
To pass an array as an argument to a Bash function use the following techniques 1. Pass My_array as an …
How to Set Default Argument in Bash [2 Methods]
In Bash, one can set default values for command line arguments. If a default value is set for an argument, …
How to Use First Argument in Bash Script [5 Cases]
In Bash, $1 represents the first argument of a script. This means when users provide the first argument while executing …
How to Check Number of Arguments in Bash? [3 Methods]
The special variable “$#” is used to check the total number of arguments provided in a Bash script. However, there …
Argument in Bash Script
Proper execution of a Bash script depends on the successful parsing of its arguments. After parsing the arguments users need …
How to Use Alias And Functions in Bash [Reference Manual]
Aliases are used to wrap up long commands under a single name. Sometimes, they serve the purpose of a function. …
How to Add Options in a Bash Script [2 Methods]
Bash commands often come with options and the output of a command varies depending on the options provided. Therefore, it …
How to Call a Function in Bash [7 Cases]
Calling Bash functions is as simple as invoking a Bash command. To call an already-declared Bash function, use the function …
Variables in Bash Function [Easy Reference]
Variables defined within a Bash function may have different scopes. A variable declared in a function can only be available …
How to Define a Function in Bash [2 Methods]
A function in Bash is a collection of commands, necessary loops or control statements that are grouped together for a …
Bash Functions
Almost every programming language offers the flexibility of creating user-defined functions. Bash is no different. Users can create their functions …
Division of Floating Point Numbers in Bash
The division operator ( “/” ) can easily divide two integer numbers in Bash. However, the division of floating point …
[Fixed] “integer expression expected” Error in Bash
The “integer expression expected” error is one of the common errors Bash users encounter. This error often arises when the …
[Solved] “binary operator expected” Error in Bash
“binary operator expected” is one of the errors Bash users often face. This happens around the test statement or “[[” …
How to Calculate in Bash [3 Practical Examples]
Bash users often need help with performing arithmetic calculations in Shell. This happens because of inadequate knowledge about the syntax …
How to Format Number in Bash [6 Cases]
The printf command is the default choice to format number in Bash. It offers multiple format specifiers such as %d …