Is it possible to track a pending task (at) using the ps command?

Question

bash

For example, I create a pending task

at 15:30
> cat 1.txt > 2.txt
> <eof>

As far as I know, once a task is created, the process runs in the background.
Once created, is it possible to track this process using the ps command? How to find it in the list?

Answer 1

at tasks run only at the scheduled time.
Once a minute, cron checks whether there are commands to run and runs if the scheduled start time has already arrived or has already passed.
The command is used to view the list of tasks atq.
Prior to launch, scripts are stored in /var/spool/atjobs - you can see the contents of the scripts and their launch parameters.

Answer 2

Once created, is it possible to track this process using the ps command? How to find it in the list?

By the name? ps -axwill list all processes in the current PID namespace.