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A shell function is a group of commands that work together to form a complete routine. Each function must have its own name. Shell functions have their own set of command line options. To retrieve the arguments supplied to a function, we ca...

The -h option instructs the shell to exit if the command returns a non-zero exit status set -e . In simple terms, the shell exits if the command fails. In Debian package management scripts, set -e this is also known as set -o errexit . Acco...

In Bash, you can use either integers or floating point numbers to generate random numbers. A bash script can be used to create random numbers within a given range or size. This article demonstrates various ways to generate random numbers in...

You may sometimes want to pause program execution in a bash script. This could be because of getting input from the user or asking them to confirm a case. In DOS, you can pause do this using the command. This article will explain how to rea...

This tutorial demonstrates the use of grep the command to match a case-insensitive pattern, count the number of matches, display the matched file names, match the exact pattern, display only the matched pattern, display line numbers, revers...

One of the most important things about git is that it only tracks changes to files, not the folders themselves, which can be found here. Directories are automatically added when you add a file in a directory. Also, when you run git add git...

In this tutorial, we will learn grep to ignore case in file names using . But first, let's grep start with . Use grep to search each file for a pattern. Patterns lists the patterns separated by newlines, grep outputting each line that match...

There are multiple commands and installation processes in a batch file, which usually takes some time to complete. However, when a batch file is run, it does not wait for the command process to complete; it executes all the commands line by...

Every scripting and programming language contains error handlers, for example Java contains try-catch for error handling. In batch scripts, there is no direct way to do this, but we can create error handlers in batch scripts using the built...

Batch programmers often confuse single percent signs (%) and double percent signs (%%) when used in batch files. The FOR command uses %f when executed on the command line, but in a batch file, it uses %%f instead of a single percent sign. T...

Large scripts contain multiple files because it is easy to maintain the code. When working with larger scripts, you may want to divide them into modules to make it easier to detect any coding errors or problems. However, Batch does not have...

Batch files consist of commands that are executed by the Command Prompt. Some of these commands cannot be run without administrator privileges; therefore, it is important to run batch files as an administrator. You can manually run a batch...

This article will demonstrate how to use a batch script to check if a file exists through sample code. Check if a file exists using batch script The general format or syntax of the code to check if a file exists is provided below. IF EXIST...

In this article, we will see how to concatenate multiple files into one file. Concatenate multiple files using batch script The general format of the commands we will use is shown below. type FileONE.txt FileTWO.txt ConcatFile.txt There are...

This article will demonstrate how to delete files using a batch script. Deleting files using batch script Generally, we can easily delete files by clicking on delete or pressing the delete button on the keyboard. But in Batch, we have to fo...