.TH 822headerfilter 1
.SH NAME
.PP
\fB\fC822headerfilter\fR \- filter a message header
.SH SYNOPSIS
.PP
.RS
.nf
822headerfilter _prog_
.fi
.RE
.SH DESCRIPTION
.PP
The \fB\fC822headerfilter\fR program reads an 822\-format email message from standard
input. It executes \fB\fC_prog_\fR with the header of the message on standard input.
.PP
The end of the message or the first line that cannot be part of an 822\-format
header field terminates the headers.
.SH EXIT STATUS
.PP
If it encounters a permanent error in reading input or executing \fB\fC_prog_\fR,
\fB\fC822headerfilter\fR exits 100\&. If it encounters a temporary error in reading
input or executing \fB\fC_prog_\fR, \fB\fC822headerfilter\fR exits 111\&. Otherwise,
\fB\fC822headerfilter\fR yields the same exit code as \fB\fC_prog_\fR\&.
.SH AUTHOR
.PP
William Baxter <sst@superscript.com>
.PP
Version 0.56
.br
Last updated 2015\-08\-23 23:24:43 CDT