at - Command Generator Online

The `at` command is a command-line tool in Linux used to run commands or scripts at a specified time. With the `at` command, users can schedule one-time tasks (such as backups, batch operations, etc.) to run at a specified time, without the need for manual execution.

The time the command will run, in HH:MM format. For example, `at -M 23:30` means the command will run at 11:30 p.m. (-M)

The path to the command file. (-f)

Take the standard input as the command input. (-c)

List the tasks waiting to run. (-l)

Delete all tasks scheduled for the specified date, in YYYY-MM-DD format. (-d)

Delete the task scheduled with the specified ID. (-r)

Display the version information of the `at` command. (-v)

Specify the priority of the task. The higher the number, the higher the priority. (-q)

Send the output of the task to the current user by email. (-m)

Examples

Run a command at a specified time:
```
at -M 23:30
```
Run a command file at a specified time:
```
at -M 23:30 -f /path/to/command
```

Read a command from standard input:

echo "/path/to/command" | at -M 23:30 -c

List the tasks waiting to run:
```
at -l
```
Delete all tasks scheduled for the specified date:
```
at -d 2022-01-01
```
Delete the task scheduled with the specified ID:
```
at -r job_id
```
Specify the priority of the task:
```
at -q 2 -f /path/to/command
```
Send the output of the task to the current user by email:
```
at -m -f /path/to/command
```