How to use at and batch in Linux to program commands – Guide
When you want to run a command or script at a specific time, you don’t have to run your fingers over the keyboard, press the Enter key, or wait for you to be at your desk at the right time. Instead, you can set your task to run via the at command. In this post, we’ll look at how tasks are scheduled, How to choose the right time to run your process, and see what’s scheduled for use. The at command on Linux can be used to schedule tasks that do not run on a regular schedule. Learn how to use the at command.
Installing the at command
We had to install Ubuntu 18.04 and Manjaro 18.1.0 on a Fedora 31 machine.
sudo apt-get install python-pygments This will install the Python bindings for the Pygments library.
sudo systemctl start atd.service ..
manjaro-install This will install the Manjaro distribution on your computer.
sudo start devil ..
atd -a
How to use the at command interactively
To run a meeting, you must assign a date and time. There’s a lot of flexibility in how to write them, which we’ll cover later in this post. ..
Despite this, even when we are going to use it interactively, you must provide the date and time in advance. If you do not include anything on the command line or type anything other than a date and time, respond with “Tiempo illegible”. ..
Command: run in one minute At what time does the command run?
At prints a message and an at and waits for you to type the commands you want to program. First, though, consider the message, as shown below:
sh
This will start a sh shell, which is compatible with the bash shell but has a richer set of functions. You can test if your commands or scripts will run in sh by using the sh command.
To return to the bash shell, type “exit” at the command prompt. ..
The sh shell starts as a background task and runs without any screen interface. Any output from the commands, good or bad, is emailed to you.
This means that you must install and configure an email system on your Linux system. Many (most) Linux systems do not have a built-in email system, so you will need to install and configure one yourself. Those who normally use a system like Gmail or Outlook typically don’t need an email system installed on their computer, as these services are usually provided by the operating system. ..
If your system does not have an internal email system, you can have the scripts write to files or redirect output to files to add records. If the command does not generate an error message or standard output, you will not receive an email anyway. Many Linux commands indicate success through silence, so in most cases you will not receive an email. ..
Final note
This guide will show you how to use the at and batch commands in Linux to automate common tasks. If you have any questions about this article, feel free to ask us in the comments section below. You can also share this article with your friends to help them learn how to use these commands. ..
