function command in Linux with examples Last Updated : 05 Jul, 2023 Comments Improve Suggest changes Like Article Like Report The function is a command in Linux that is used to create functions or methods. It is used to perform a specific task or a set of instructions. It allows users to create shortcuts for lengthy tasks making the command-line experience more efficient and convenient. The function can be created in the user's current shell session or saved in the shell startup file to make them available every time a new shell session is initiated Syntax of function and its usage1. Using function keyword A function in Linux can be declared by using the keyword function before the name of the function. Different statements can be separated by a semicolon or a new line. SYNTAX: function name { COMMANDS ; }function name { COMMANDS ; }2. Using parenthesis A function can also be declared by using parenthesis after the name of the function. Different statements can be separated by a semicolon or a new line. SYNTAX: name () { COMMANDS ; }name () { COMMANDS ; }3.Parameterised function Parameterised function $1 will displays the first argument that will be sent and $2 will display the second ans so on... 4.help function It displays helpful information. help functionConclusion In this article we have discussed the function command in Linux and how to use it. We need to experiment and explore the various possibilities with the function command. Overall, we can say that with practice, we will become proficient in utilizing functions to simplify and expedite our daily Linux tasks. Comment More infoAdvertise with us D DrRoot_ Follow Improve Article Tags : Technical Scripter Linux-Unix Technical Scripter 2018 linux-command Linux-misc-commands +1 More Explore Linux/Unix Tutorial 10 min read Getting Started with LinuxWhat is Linux Operating System 10 min read LINUX Full Form - Lovable Intellect Not Using XP 2 min read Difference between Linux and Windows 7 min read What are Linux Distributions ? 8 min read Difference between Unix and Linux 5 min read Installation with LinuxHow to Install Arch Linux in VirtualBox? 7 min read Fedora Linux Operating System 12 min read How to install Ubuntu on VirtualBox? 6 min read How to Install Linux Mint? 3 min read How to Install Kali Linux on Windows? 2 min read How to Install Linux on Windows PowerShell Subsystem? 2 min read How to Find openSUSE Linux Version? 2 min read How to Install CentOS 2 min read Linux CommandsLinux Commands 15+ min read Essential Unix Commands 7 min read How to Find a File in Linux | Find Command 9 min read Linux File SystemLinux File System 12 min read Linux File Hierarchy Structure 6 min read Linux Directory Structure 6 min read Linux KernelLinux Kernel 4 min read Kernel in Operating System 9 min read How Linux Kernel Boots? 11 min read Difference between Operating System and Kernel 3 min read Linux Kernel Module Programming: Hello World Program 7 min read Linux Loadable Kernel Module 7 min read Loadable Kernel Module - Linux Device Driver Development 4 min read Linux Networking ToolsNetwork configuration and troubleshooting commands in Linux 5 min read How to configure network interfaces in CentOS? 5 min read Command-Line Tools and Utilities For Network Management in Linux 8 min read Linux - Network Monitoring Tools 4 min read Linux ProcessProcesses in Linux/Unix 6 min read How to Manage Process in Linux 4 min read Getting System and Process Information Using C Programming and Shell in Linux 2 min read Process states and Transitions in a UNIX Process 4 min read Linux FirewallLINUX Firewall 7 min read iptables command in Linux with Examples 7 min read How to Configure your Linux Firewall - 3 Methods 12 min read Shell Scripting & Bash ScriptingIntroduction to Linux Shell and Shell Scripting 8 min read What is Terminal, Console, Shell and Kernel? 5 min read How to Create a Shell Script in linux 7 min read Shell Scripting - Different types of Variables 4 min read Bash Scripting - Introduction to Bash and Bash Scripting 12 min read Bash Script - Define Bash Variables and its types 12 min read Shell Scripting - Shell Variables 6 min read Bash Script - Difference between Bash Script and Shell Script 4 min read Shell Scripting - Difference between Korn Shell and Bash shell 3 min read Shell Scripting - Interactive and Non-Interactive Shell 3 min read Shell Script to Show the Difference Between echo â$SHELLâ and echo â$SHELLâ 4 min read Like