.TH ATD 8 2009-11-14
.SH NAME
atd \- run jobs queued for later execution
.SH SYNOPSIS
.B atd
.RB [ \-l
.IR load_avg ]
.RB [ \-b
.IR batch_interval ]
.RB [ \-d ]
.RB [ \-f ]
.RB [ \-n ]
.RB [ \-s ]
.SH DESCRIPTION
.B atd
runs jobs queued by
.BR at (1) .
.PP
.SH OPTIONS
.TP 8
.B \-l
Specifies a limiting load factor, over which batch jobs should
not be run, instead of the compile-time choice of 0.8.
For an SMP system with
.I n
CPUs, you will probably want to set this higher than
.IR n\-1.
.TP 8
.B \-b
Specify the minimum interval in seconds between the start of two
batch jobs (60 default).
.TP 8
.B \-d
Debug; print error messages to standard error instead of using
.BR syslog (3) .
This option also implies
.BR \-f .
.TP
.B \-f
Run
.BR atd
in the foreground.
.TP 8
.B \-s
Process the at/batch queue only once.
This is primarily of use for compatibility with old versions of
.BR at ;
.TP
.B \-n
Append the hostname of the system to the subject of the e-mails sent by
.BR atd .
.TP 8
.B "atd \-s"
is equivalent to the old
.B atrun
command.
.SH WARNING
.B atd
won't work if its spool directory is mounted via NFS even if
.I no_root_squash
is set.
.SH FILES
.I /var/spool/at
The directory for storing jobs; this should be mode 700, owner
root.
.PP
.I /var/spool/at/spool
The directory for storing output; this should be mode 700, owner
root.
.PP
.IR /etc/at.allow ,
.I /etc/at.deny
determine who can use the
.B at
system.
.SH "SEE ALSO"
.BR at (1),
.BR at.deny (5),
.BR at.allow (5),
.BR cron (8),
.BR crontab (1),
.BR syslog (3).
.SH BUGS
The functionality of
.B atd
should be merged into
.BR cron (8) .