146 lines
4.0 KiB
Groff
146 lines
4.0 KiB
Groff
.\" Copyright (c) 1989, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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.\" @(#)tput.1 8.2 (Berkeley) 3/19/94
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.\" $FreeBSD$
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.\"
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.Dd March 19, 1994
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.Dt TPUT 1
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.Os BSD 4.4
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.Sh NAME
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.Nm tput ,
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.Nm clear
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.Nd terminal capability interface
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.Sh SYNOPSIS
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.Nm
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.Op Fl T Ar term
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.Ar attribute
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.Nm clear
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.Sh DESCRIPTION
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The
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.Nm
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command makes terminal-dependent information available to users or shell
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applications. When invoked as the
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.Nm clear
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utility, the screen will be cleared as if
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.Dl tput clear
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had been executed.
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The options to
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.Nm
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are as follows:
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.Bl -tag -width Ds
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.It Fl T
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The terminal name as specified in the
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.Xr termcap
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database, for example,
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.Dq vt100
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or
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.Dq xterm .
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If not specified,
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.Nm
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retrieves the
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.Dq Ev TERM
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variable from the environment.
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.El
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.Pp
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The
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.Nm
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command outputs a string if the
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.Ar attribute
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is of type string; a number if it is of type integer.
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Otherwise,
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.Nm
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exits 0 if the terminal has the capability and 1 if it does not,
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without further action.
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.Pp
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If the
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.Ar attribute
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is of type string, and takes arguments (e.g. cursor movement,
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the termcap
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.Dq cm
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sequence) the arguments are taken from the command line immediately
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following the attribute.
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.Pp
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The following special attributes are available:
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.Bl -tag -width Ar
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.It clear
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Clear the screen (the
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.Xr termcap
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.Dq cl
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sequence).
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.It init
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Initialize the terminal (the
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.Xr termcap
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.Dq is
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sequence).
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.It longname
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Print the descriptive name of the user's terminal type.
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.It reset
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Reset the terminal (the
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.Xr termcap
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.Dq rs
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sequence).
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.El
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.Sh DIAGNOSTICS
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The exit value of
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.Nm
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is based on the last attribute specified.
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If the attribute is of type string or of type integer,
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.Nm
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exits 0 if the attribute is defined for this terminal type and 1
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if it is not.
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If the attribute is of type boolean,
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.Nm
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exits 0 if the terminal has this attribute, and 1 if it does not.
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The
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.Nm
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command exits 2 if any error occurred.
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.Sh SEE ALSO
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.Xr termcap 3 ,
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.Xr termcap 5
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.Sh BUGS
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The
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.Nm
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command can't really distinguish between different types of attributes.
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.Pp
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Some termcap entries depend upon having a
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.Sq %
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in them that is just a
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.Sq %
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and nothing more. Right now we just warn about them if they don't
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have a valid type declaration. These warnings are sent to
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stderr.
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 4.4 .
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