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'\"macro stdmacro
.\"
.\" Copyright (c) 2013 Red Hat.
.\" Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
.\"
.\" This program is free software; you can redistribute it and/or modify it
.\" under the terms of the GNU General Public License as published by the
.\" Free Software Foundation; either version 2 of the License, or (at your
.\" option) any later version.
.\"
.\" This program is distributed in the hope that it will be useful, but
.\" WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
.\" or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
.\" for more details.
.\"
.TH PMPOST 1 "PCP" "Performance Co-Pilot"
.SH NAME
\f3pmpost\f1 \- append messages to the Performance Co-Pilot notice board
.\" literals use .B or \f3
.\" arguments use .I or \f2
.SH SYNOPSIS
.B $PCP_BINADM_DIR/pmpost
.I message
.SH DESCRIPTION
.B pmpost
will append the text
.I message
to the end of the
Performance Co-Pilot (PCP) notice board file (\c
.BR $PCP_LOG_DIR/NOTICES )
in an atomic manner that guards against corruption of
the notice board file
by concurrent invocations of
.BR pmpost .
.PP
The PCP notice board is intended to be a persistent store
and clearing house for important messages relating to the
operation of the PCP and the notification of performance
alerts from
.BR pmie (1)
when other notification options are either unavailable or
unsuitable.
.PP
Before being written, messages are prefixed by the current
time, and when the current day is different to the last
time the notice board file was written,
.B pmpost
will prepend the message with the full date.
.PP
If the notice board file does not exist,
.B pmpost
will create it.
.B pmpost
would usually run from long-running PCP daemons executing
under the (typically unprivileged)
.B $PCP_USER
and
.B $PCP_GROUP
accounts.
The file should be owned by root, and group writable by the
.B $PCP_GROUP
group.
.SH FILES
.TP 10
.B $PCP_LOG_DIR/NOTICES
the PCP notice board file
.SH "PCP ENVIRONMENT"
The file
.B /etc/pcp.conf
contains the local values for PCP_ variables.
.SH UNIX SEE ALSO
.BR logger (1).
.SH WINDOWS SEE ALSO
.BR pcp-eventlog (1).
.SH SEE ALSO
.BR pmie (1),
.BR pcp.conf (5)
and
.BR pcp.env (5).
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