Is it possible to use the at command to schedule a job to run at a given timestamp?

Question

I want to schedule a file to run using the at command, as described in this tutorial. I see that the at command supports the posix format -- but I don't see any mention of timestamps. Surely it is possible to schedule a job at a given timestamp.

$ man at | grep timestamp

Answer 1

From usr/share/doc/at/timespec, it doesn't look like it. But you can always use date to convert your timestamp, eg:

at "$(date --date=@1393419435 +'%H:%M %D')"

date takes a timestamp in seconds, so don't forget to trim fractions of seconds if needed.