выполнять команды позже (execute commands at a later time)
Стандартный вывод (Stdout)
When standard input is a terminal, prompts of unspecified format
for each line of the user input described in the STDIN section
may be written to standard output.
In the POSIX locale, the following shall be written to the
standard output for each job when jobs are listed in response to
the -l option:
"%s\t%s\n", at_job_id, <date>
where date shall be equivalent in format to the output of:
date +"%a %b %e %T %Y"
The date and time written shall be adjusted so that they appear
in the timezone of the user (as determined by the TZ variable).
