Ubuntu batch script example code#

For each loop, the iterator takes on the value of the next number, string, or whatever data type the loop is iterating over. The loop body can contain any valid script command.Ī variable called the loop counter or iterator is used to step through a range of values or a list of data items.

Ubuntu batch script example code#

The body of the loop contains the code that you want to have repeated. The batch script may be given to sbatch through a file name on the command line, or if no file name is specified, sbatch will read in a script from standard input. Now you are ready to execute your first bash script. Navigate to the directory where your helloworld.sh script is located and make the file executable: chmod +x helloworld.sh. Lets save this batch file as test.bat and run this file by double-clicking on it, this will print the system IP information of the system on which the batch file is running, the line which starts with rem is ignored hence the information related to config /all command will not be. First line is also a place where you put your interpreter which is in this case: /bin/bash. The header dictates what the loop is working with-numbers or strings, for example-and what the end condition is that will stop the looping. Example 2 echo off echo 'System ip information' ipconfig rem ipconfig /all. The above example starts with a simple sleep bash command that will put your system to sleep for 10 seconds. These are used in the header of the loop. Then, paste in the following simple script: /bin/bash sleep 10 & echo I’ve been sleeping for 10 seconds, I want more & sleep 10 & echo I’m done sleeping, thanks. It can work with numbers, words, arrays, command line variables, or the output of other commands. Rather than type the same set of instructions into your script, again and again, a loop will repeat one section of code over and over for you. A loop is a section of code that you want to have executed repeatedly. The for LoopĪll scripting and programming languages have some way of handling loops. Note: This script supports all linux OSs like Redhat, Centos, Ubuntu, suse, kali, Arch, Bitname, BSD. A popular use of the batch command is for setting up regular backups. Kindly run below script with sudo permission for creating a user by script. We describe its many variants so you can use them successfully in your own Linux scripts. Example 1: Scheduling a System Backup Creating a Weekly Backup Routine. Open your text editor, and type the following line: /bin/bash. First, let's check to see if that name conflicts with something: You can see that there's no output of the which command, so we're all set to use this name. Ubuntu way to make a file that would run a terminal command when you click it. The versatile Bash for loop does much more than loop around a set number of times. Let's start with a simple script that allows you to copy files and append dates to the end of the filename.