Linux operating system allows users to create commands and execute them over the command line. To create a command in Linux,the first step is to create a bash script for the command. The second step is to make the command executable.The script can be run only after file permissions have been changed to executable mode. Once changed, copy it to the binary path of Linux so that it can be run just like system-defined commands of operating systems. Follow these easy steps to create a command in Linux.