at

at

The at command in Linux is used to schedule a command or script to run at a later time. It is a powerful tool that can be used to automate tasks on your system.

The at command is used in the following syntax:

at [options] [time] [command]

The time is the time that you want the command or script to run. The command is the command or script that you want to run.

The options can be used to specify the following:

• -f : Specify a file that contains the command or script to run.

• -m : Send a mail notification when the command or script has finished running.

• -r : Remove the job from the at queue.

For example, to schedule the command ls to run at 10:00 AM, you would run the following command:

at 10:00 am ls

This command will schedule the command ls to run at 10:00 AM.

To schedule the script /home/user/myscript.sh to run at 11:00 AM, you would run the following command:

at 11:00 am -f /home/user/myscript.sh

This command will schedule the script /home/user/myscript.sh to run at 11:00 AM.

To send a mail notification when the command or script has finished running, you would run the following command:

at 12:00 pm -m ls

This command will schedule the command ls to run at 12:00 PM and will send a mail notification when the command has finished running.

To remove the job from the at queue, you would run the following command:

at -r 12345

This command will remove the job with the ID 12345 from the at queue.

The at command is a powerful tool that can be used to automate tasks on your system. It is a versatile tool that can be used to schedule commands or scripts to run at any time.

Here are some additional things to note about the at command:

• The at command can be used to schedule commands or scripts to run at any time.

• The at command can be used to schedule commands or scripts to run on a recurring basis.

• The at command can be used to schedule commands or scripts to run even if you are not logged in to your system.

• The at command is a powerful tool that can be used to automate tasks on your system.

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