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Write to a File From the Shell

Last Updated: 23 July 2025

Writing files in the shell might sound complex, but it's simple, and once you understand it will be at your fingertips. Whether you're saving data, creating files, or edit...read more

Shell Script To Broadcast A Message

Last Updated: 07 May 2026

Broadcasting a message in a shell script allows system-wide communication with all logged-in users. This technique is useful for administrators to send notifications, warn...read more

Bash shell script to find if a number is perfect or not

Last Updated: 05 September 2022

In this article, we will discuss how to write a bash script to find if a number is perfect or not. A perfect number is defined as, a positive number that is equal to the s...read more

Shell Script to Delete a File from Every Directory Above the Present Working Directory

Last Updated: 23 July 2025

In this article, we will discuss how to delete a file from every directory above the parent working directory using shell script in Linux. To delete a file from a director...read more

Shell Script to Check Hard Disk Revolutions Per Minute (RPM) Speed

Last Updated: 30 June 2021

RPM is an acronym for Revolution Per Minute. RPM is the number of revolutions a hard disk makes in a single minute. Normally, the higher the RPM of a disk the better it is...read more

Create multiple users using shell script in Linux

Last Updated: 03 August 2021

In Linux, we create users for multiple purposes, so in Linux, it's very common to make new users depending on the tasks. So sometimes we need to create more than one user ...read more

Mimic the Linux adduser command in C

Last Updated: 06 August 2025

Programming for fun can manifest itself in the works of leisurely coding practice as well. Regardless of being academically inadequate, the task certainly does contribute ...read more

Shell Script to Perform Operations on a File

Last Updated: 23 July 2025

Most of the time, we use shell scripting to interact with the files. Shell scripting offers some operators as well as some commands to check and perform different properti...read more

coproc Command in Linux with Examples

Last Updated: 23 July 2025

coproc command in Linux is a shell command which allows us to create a co-process that is connected to the invoking shell via two pipes. One of the pipes enables us to sen...read more

let command in Linux with Examples

Last Updated: 31 July 2023

The `let` command in Linux is a powerful tool used for evaluating arithmetic expressions on shell variables. It supports various operators and functionalities to perform c...read more

read command in Linux with Examples

Last Updated: 25 September 2024

read command in the Linux system is used to read from a file descriptor. This command reads up the total number of bytes from the specified file descriptor into the buffer...read more

declare command in Linux with Examples

Last Updated: 25 September 2024

The built-in is a powerful built-in feature of the Bash shell. It allows users to declare and set attributes for variables and functions, enabling better control over thei...read more

return command in Linux with examples

Last Updated: 24 September 2024

return command is used to exit from a shell function. It takes a parameter [N], if N is mentioned then it returns [N] and if N is not mentioned then it returns the status ...read more

while Command in Linux with Example

Last Updated: 17 April 2024

The "while" command is a powerful tool in the Linux shell that allows you to execute a series of commands repeatedly based on a given condition. It is commonly used in she...read more

enable and disable command in Linux

Last Updated: 05 November 2019

Enables and disables are the built-in shell commands. enable command is used to start the printers or classes whereas the disable command is used to stop the printers or c...read more

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⇱ Linux-Shell-Commands Archives - GeeksforGeeks