Scripting

>> Run Cron Job Manually With Proper Environment

>> Execute Shell Commands and Silence Them in Vim

>> Indenting and Turning Off Auto Indent When Pasting Text Into Vi

>> Script to Automatically Test if a Website Is Available

>> How to Create a Random Human-Readable Text File in Linux

>> Compare Variables With Numbers in Bash

>> One Line if-else Condition in Linux Shell Scripting

>> Execute a Linux Command Without Keeping It in History

>> Run Multiple Commands in Docker CMD Directive

>> Creating UUIDs in Bash

>> Determine Whether a Shell Variable Is Empty

>> Interactive, Non-interactive, Login, Non-login Shells in Linux

>> Run a Shell Script Without Using “sh” or “bash” Commands

>> Recall the Previous Command or Its Arguments in Bash

>> Converting Strings to Numbers in the Linux Command Line Interface

>> Differences Between Single and Double Brackets in Bash

>> Setting Environment Variables for systemd Services

>> When to Avoid Using && in Shell Scripts

>> Bash Bitwise Operators

>> Waiting for a File in a Shell Script

>> Execute a Command Whenever File or Directory Changes

>> Why Looping Over find’s Output Is a Bad Practice

>> Check if Command Executed Successfully in Linux

>> How to Run Multiple Bash Scripts in a Terminal Window

>> Running a Script That’s Not Executable

>> Creating a Simple Select Menu in the Shell Script

>> Running a Command That Is Shadowed by an Alias

>> Checking Whether a Directory Exists in a Shell Script

>> Concatenate String Variables in Bash

>> Differences Between the return and exit Commands

>> Difference Between Sourcing and Executing a Shell Script

>> The set Command in Linux

>> Why Is Using a Shell Loop to Process Text a Bad Practice?

>> Script That Counts Files Then Removes the Oldest Ones

>> Retrieve Video Information on the Command Line in Linux

>> Compare Strings in Dot-Separated Version Format

>> List All Available Commands and Aliases in Linux

>> Split a List by Comma in Bash

>> Linux Shells Performance: dash vs bash

>> Safe Use of eval in Bash

>> Redirecting the Output of the time Command

>> Raise an Error in Bash Script

>> Handling Special Characters in Shell Scripts

>> rsync and Hidden Files

>> Hiding User Input in a Bash Terminal

>> Guide to Getting DST-Safe Relative Dates

>> The Difference Between #!/usr/bin/bash and #!/usr/bin/env bash

>> Reading/Parsing Properties File in a Linux Script

>> When to Wrap Quotes Around Arguments in a Shell Command

>> Suppress Echo of Command Invocation in a Makefile

>> How to Safely Exit from Bash Scripts

>> Print Statistics of Numbers on the Linux Terminal

>> Automating Telnet Sessions Using expect

>> Bash: let Statement vs. Assignment

>> The Conditional Variable Assignment Operator in a Makefile

>> Inserting a Newline in a Variable in Bash

>> Fixing the “/bin/sh: pushd: Not Found” Error in Linux

>> Iterating Over Each Line of ls -l Output

>> Substitute Shell Variables in a Text File

>> Division with Variables in a Linux Shell

>> Automatically Capture Output of the Last Command Into a Variable Using Bash

>> What is a Sysroot?

>> Downloading Content Using wget Without Following Redirects

>> Using the passwd Command from Within a Shell Script

>> Checking if a Variable Is a Number in Bash

>> The /bin/true and /bin/false Commands in Linux

>> Kill a Child Process After a Given Timeout in Bash

>> Run a Script With a Different Working Directory

>> How to Write Stdout to a File with Colors

>> Flow Control in Bash Without Goto

>> Round a Divided Number in Bash

>> Use the Lines of a File as Arguments of a Linux Command

>> Set Environment Variables for a Bash Command

>> Find the Script’s Filename Within the Same Script in Bash

>> Configure a Systemd Service to Restart Periodically

>> How to Write Bash Variable Contents to a File

>> Using grep on a Continuous Stream

>> Read Values Into a Shell Variable From a Pipe

>> Linux Command-Line Tools to Take Website Screenshots

>> Replacing Whitespaces With Tabs in a File in Linux

>> Return Value of Substitutions With sed and awk

>> Merging Images in the Linux Terminal

>> Use of Dash “-” in Command-Line Parameters

>> xargs With Multiple Arguments

>> Include Files in a Bash Shell Script With source Command

>> Restrict Commands for SSH Users

>> Solving The “Cannot Open Shared Object File: No Such File Or Directory” Error In Linux

>> Start Script After Another Finishes In Linux

>> Run Bash Script as a Daemon

>> POSIX Shell Array/List Data Structure

>> Convert Hex to ASCII Characters in the Linux Shell

>> Expand A Relative Path In Bash

>> How to Run Bash Commands From a Text File

>> Get Bash Script Location From Within the Script

>> How to Remove Non UTF-8 Characters From a File

>> Pipe Output to Bash Function

>> Parse Command Line Arguments in Bash

>> Running a Shell Script on a Remote Machine Through SSH

>> Escaping Characters in Bash

>> Debugging Programs Using the GDB Command

>> Testing Bash Scripts With Bats

>> Segmentation Fault in Linux

>> Get Unique Values from an Array in Bash

>> Checking if a Linux Environment Variable Is Set or Not

>> Looping Through the Content of a File in Bash

>> Show Line Number When Executing a Bash Script

>> Using the Exclamation Mark (!) in Bash

>> Using 2D Arrays in Bash Under Linux

>> Removing the Last Character of a File

>> Check if a Variable Exists in a List in Bash

>> Escape a Single Quote in Single Quote String in Bash

>> How to Create an Alias in Linux

>> List Environment Variables in Linux

>> Simulating the Enter Keypress in Bash Scripts

>> Bash – Using History Efficiently

>> Filtering Only the Standard Error in Linux

>> Using printf and echo in Linux

>> How to Create a CPU Spike in Bash

>> Get the Path of a Linux Command

>> Restart a NoSQL Database Like MongoDB

>> Check the Syntax of a Bash Script Without Running It

>> Identify User in a Bash Script Called by sudo

>> Delete an Exported Environment Variable in Shell

>> Create Bash Alias That Accepts Parameters

>> Extracting a Substring in Bash

>> Clear a Terminal Screen in Linux

>> How to Add Up a Column of Numbers in Bash

>> Solving the “Unary Operator Expected” Error

>> Standard Exit Status Codes in Linux

>> Concatenate Two Strings to Build a Complete Path in Linux

>> Get Exit Code of a Background Process

>> Kill a Process Running on a Specific Port in Linux

>> Aborting a Shell Script if Any Command Fails

>> Display Specific Columns From a File in Linux

>> Difference between ${} and $() in Bash

>> Preserve Linebreaks When Storing Command Output to a Variable

>> Bash Script to Calculate Time Elapsed

>> Iterate Over a List of Files With Spaces in Their Names in Linux

>> File Editing: Appending a Non-Existent Line to a File

>> How to Insert a New Line Character in Linux Shell Script Output

>> Linux Bash: Multiple Variable Assignment

>> Showing a GUI Notification From a Shell Script in Linux

>> Storing a Command in a Variable in a Shell Script

>> Run a Script on Startup in Linux

>> Negate an if Condition in a Bash Script

>> When to Use an Alias vs Script vs a New Function in Bash

>> Using sed With a Literal String Instead of an Input File

>> Difference Between .bashrc, .bash-profile, and .profile

>> How to Create a crontab Through a Script

>> Pass the Output of a Command as an Argument for Another

>> Ensure Only One Instance of a Bash Script Is Running

>> The Meaning of IFS in Bash Scripting

>> Check if a String Contains a Substring in Linux

>> Running Script or Command as Another User in Linux

>> Running Multi-Line Shell Code at Once From Single Prompt

>> Guide to Generate Random Numbers in Linux

>> Debugging a Bash Script

>> Get the Contents of a Web Page in a Shell Variable

>> How to Parse a CSV File in Bash

>> What is a .pid File?

>> How To Write a Bash Script That Answers Interactive Prompts

>> How To Script “Yes” When Installing Programs

>> The Uses of the Exec Command in Shell Script

>> Splitting a File at Given Line Numbers

>> How to Delete Multiple Files at Once in Bash

>> Difference Between grep, sed, and awk

>> Run a Function in a Script from the Command Line

>> Here Document And Here String

>> Running Multiple Commands in the Background

>> How to Use the Paste Command

>> Implement a Counter in Bash Script

>> Writing Text to File Using Linux Cat Command

>> Conditional Expressions in Shell Script

>> Save Modifications In-Place with awk

>> Repeat a Linux Command at a Given Interval

>> Appending Lines to a File

>> Defining a Bash Variable With or Without ‘export’

>> What Does a Double-Dash in Shell Commands Mean?

>> Command Substitution

>> Commands to Get the Min, Max, Median, and Mean of a Dataset

>> Execute Bash Script Directly From a URL

>> Send stdout to Multiple Commands

>> When to Use xargs

>> How to Evaluate Arithmetic Expressions in Bash

>> Linux comm Command

>> The Linux join Command

>> Using sed to Replace a Multi-Line String

>> Reading Output of a Command Into an Array in Bash

>> Bash Special Variables

>> Directory Navigation Using the pushd and popd Commands

>> How to Call an External Program Using awk

>> Read Random Line From a File in Linux

>> Linux source Command

>> Introduction to Bash Array

>> How to Reverse the Order of Lines in a File in Linux

>> String Manipulation in Bash

>> Linux ping Command

>> Introduction to the tee Command

>> Remove the First Characters of a Line

>> Linux man Command

>> How to Use the cd Command in Bash Scripts

>> How to Join Multiple Lines Into One

>> Linux Scripting Series

>> How to Change Terminal Output Color in Linux?

>> Is There a Way to ‘uniq’ by Column?

>> Using Shebang #! in Linux Scripts

>> Guide to the sed Stream Editor

>> “Cut” Command in Linux

>> date Command in Linux

>> Linux watch Command

>> The echo Command in Linux

>> Execute a Command in Multiple Directories on Linux

>> Working with the AWS CLI for EC2

>> Guide to the AWK Programming Language

>> Cron Job Testing and Debugging in Linux

>> Bash Functions in Linux

>> Guide to the Linux read Command

>> How to Use Command Line Arguments in a Bash Script

>> How to Pass Command Line Arguments to Bash Script

>> Pipes and Redirection in Linux

>> Guide to Stream Redirections in Linux

>> Creating Symbolic and Hard Links with Linux Commands

>> Linux Commands – Looping Through Directories

>> Linux Commands – Repeat a Command n Times

>> Silencing the Output of a Bash Command