isserial.8

.\"
.\" Copyright 2003 Werner Fink, 2003 SuSE Linux AG, Germany.
.\"
.\" 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.
.\"
.TH SHOWCONSOLE 8 "Jan 14, 2016" "Version 2.12" "The SUSE boot concept"
.UC 8
.SH NAME
Isserial \- determines if the underlying tty of stdin is a serial line
.br
.SH SYNOPSIS
.B isserial [< /dev/console]
.SH DESCRIPTION
.B iserial
determines if the underlying character device of
the current
.B stdin
is a serial line.
This can be used on
.I /dev/console
as current character device to
check if the console is a serial line.
.PP
The exit status of
.B iserial
is
.B 0
if
.B stdin
is a serial line otherwise not.
.\"
.SH FILES
.TP
.I /dev/console
the system console.
.\"
.SH SEE ALSO
.BR console (4),
.BR tty (4),
.SH COPYRIGHT
2003 Werner Fink,
2003 SuSE GmbH Nuernberg, Germany.
.SH AUTHOR
Werner Fink <werner@suse.de>