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85 lines
2.7 KiB
Groff
85 lines
2.7 KiB
Groff
.\" resizewin
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.\"
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.\" Query terminal for size and inform the kernel
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.\"
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.\" Copyright 2015 EMC / Isilon Storage Division
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 9, 2017
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.Dt RESIZEWIN 1
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.Os
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.Sh NAME
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.Nm resizewin
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.Nd update terminal size
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.Sh SYNOPSIS
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.Nm
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.Op Fl z
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.Sh DESCRIPTION
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The
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.Nm
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utility
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queries the terminal emulator for the current window size and updates
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the size known to the kernel using the
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.Dv TIOCSWINSZ
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ioctl.
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.Pp
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The following options are available:
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.Bl -tag -width ".Fl z"
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.It Fl z
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Do nothing unless the current kernel terminal size is zero.
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This is useful when run from a user's profile (shell startup) scripts:
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querying the window size is required for serial lines, but not when
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logging in over the network, as protocols like TELNET or SSH already
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handle the terminal size by themselves.
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.El
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.Pp
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After a terminal window has been resized, running
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.Nm
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updates the kernel's window size to match the new size.
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.Pp
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.Nm
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is functionally similar to
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.Xr resize 1 ,
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which is part of the
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.Xr xterm 1
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distribution.
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However,
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.Nm
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only works with VT100/ANSI-compatible terminals and does not emit
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commands to set environment variables.
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.Pp
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The terminal is assumed to be VT100/ANSI compatible.
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The VT100/ANSI escape sequences are supported by virtually all modern
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terminals, including xterm, konsole, gnome-terminal, iTerm,
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Terminal.app, and PuTTY.
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.Sh SEE ALSO
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.Xr stty 1 ,
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.Xr tty 4
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.Sh HISTORY
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The
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.Nm
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command first appeared in
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.Fx 11.0 .
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