Public bug reported:
Binary package hint: at
Searching the man page for '-b' yields nothing and it does not appear to
be documented, however I assume it means batch...
AT(1) Linux Programmer’s Manual
AT(1)
NAME
at, batch, atq, atrm - queue, examine or delete jobs for later execu‐
tion
SYNOPSIS
at [-V] [-q queue] [-f file] [-mldbv] TIME <------ LOOK HERE!!!
... [-mldbv] .. wtf does -b do?
at -c job [job...]
atq [-V] [-q queue]
atrm [-V] job [job...]
batch
...
...
...
OPTIONS
-V prints the version number to standard error.
-q queue
uses the specified queue. A queue designation consists of a
single letter; valid queue designations range from a to z. and
A to Z. The a queue is the default for at and the b queue for
batch. Queues with higher letters run with increased niceness.
The special queue "=" is reserved for jobs which are currently
running.
If a job is submitted to a queue designated with an uppercase letter,
the job is treated as if it were submitted to batch at the time of the
job. Once the time is reached, the batch processing rules with respect
to load average apply. If atq is given a specific queue, it will only
show jobs pending in that queue.
-m Send mail to the user when the job has completed even if there
was no output.
-f file Reads the job from file rather than standard input.
-l Is an alias for atq.
-d Is an alias for atrm.
-v Shows the time the job will be executed before reading
the job.
Times displayed will be in the format "Thu Feb 20 14:50:00
1997".
-c cats the jobs listed on the command line to standard out‐
put.
...
...
...
As you can clearly see, it is not documented in the list of options, but
it is listed at the top as valid...
** Affects: at (Ubuntu)
Importance: Undecided
Status: New
--
man page lists option '-b', but is never documented
https://bugs.launchpad.net/bugs/156493
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