What is the at command used for?

What is the at command used for?

at command is a command-line utility that is used to schedule a command to be executed at a particular time in the future. Jobs created with at command are executed only once. The at command can be used to execute any program or mail at any time in the future.

How do you schedule a job using at command?

How to schedule one-time jobs in Linux

1. Run the at command with the date or time when you want your commands to be executed.
2. At the at> prompt, type the commands you want to execute as though you were typing at the shell prompt.
3. When you finish entering the commands you want to execute, press Ctrl+D to indicate the end.

How does the at command work?

On Unix-like operating systems, at reads a series of commands from standard input and collects them into one “at-job” which is carried out at a later date. The job inherits the current environment, so that it is executed in the same working directory and with the same environment variables set as when it was scheduled.

Is at command CMD?

Use the ‘at’ command to schedule commands and other programs In Windows 7 and earlier versions of Windows, the at command is a Command Prompt command that is used to schedule other commands and programs to run at specific dates and times.

What is allow AT commands?

The AT commands were able to bypass Android security mechanisms, exfiltrate sensitive device information, perform screen unlocks, and inject touch events and much more. The team used the phone’s USB interface, i.e., the attacker can use USB docks, chargers or charging stations to use phone’s secret AT commands.

How do you schedule a job?

How to schedule the background job?

1. Click on Date/Time(For periodic jobs). If you click “Immediate” then job will start running right away.
2. Define job’s start date/time, end date/time. The job will be released only once it meets its Scheduled start date/time.
3. Press periodic values.

What is a 3GPP AT command?

AT commands are software interface for wireless modules. AT commands are defined as part of 3GPP standard under 3GPP TS 27.007. That implies that all the wireless modules that operate on cellular networks are required to support AT commands.

What are AT commands in phone?

These AT commands or Attention commands are a short collection of strings which were designed to transmit via phone line and modems, back in the 1980s. Earlier, these commands were used for a modem dial-up, hang up, and change specific connection settings.

How to use the at command to schedule tasks?

To use the at command, the Task Scheduler service must be running, and you must be logged on as a member of the local Administrators group. When you use the at command to create tasks, you must configure the tasks so that they run in the same user account.

When to use the at command in Linux?

The at command in Linux can be used to schedule jobs that do not run on a regular schedule. At can be compared with the concept of Crontab in Linux, which is a better way for automating recurring tasks.

How to set the time in the at command?

The at utility accepts a wide range of time specifications. You can specify time, date, and increment from the current time: Time – To specify a time, use the HH:MM or HHMM form. To indicate a 12-hour time format, use am or pm after the time. You can also use strings like now, midnight, noon, or teatime (16:00).

What is the syntax for the at command?

The simplified syntax for the at command is as follows: at [ OPTION… ] runtime The at command takes the date and time ( runtime ) when you want to execute the job as a command-line parameter, and the command to be executed from the standard input.