173 lines
4.0 KiB
Groff
173 lines
4.0 KiB
Groff
.\" $NetBSD: tabs.1,v 1.2 2008/12/11 12:39:41 wiz Exp $
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.\"
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.\" Copyright (c) 2008 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Roy Marples.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd December 9, 2008
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.Dt TABS 1
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.Os
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.Sh NAME
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.Nm tabs
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.Nd set terminal tabs
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.Sh SYNOPSIS
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.Nm
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.Op Fl n Ns | Ns Fl a Ns | Ns Fl a2 Ns | Ns Fl c Ns | Ns Fl c2 \
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Ns | Ns Fl c3 Ns | Ns Fl f Ns | Ns Fl p Ns | Ns Fl s Ns | Ns Fl u
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.Op +m Ns Op n
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.Op Fl T Ar type
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.Nm
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.Op Fl T Ar type
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.Op + Ns Op n
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.Ar n1 Ns Op , Ns Ar n2 Ns , Ns Ar ...
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.Sh DESCRIPTION
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The
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.Nm
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utility displays a series of characters that first clears the hardware terminal
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tab settings and then initializes the tab stops at the specified positions
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and optionally adjusts the margin.
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.Pp
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The phrase "tab-stop position N" means that, from the start of a line of
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output, tabbing to position N shall cause the next character output to be in
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the (N+1)th column on that line.
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.Pp
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The following options are supported:
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.Bl -tag -width Fl
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.It Fl Ar n
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Specifies repetitive tab stops separated by a uniform number of columns,
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.Ar n ,
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where
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.Ar n
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is a single digit decimal number.
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The default usage of
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.Nm
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with no arguments is equivalent to
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.Nm
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.Fl 8 .
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When
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.Fl 0
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is used, the tab stops are cleared and no new ones set.
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.It Fl a
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Assembler, applicable to some mainframes.
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Equivalent to
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.Nm
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1,10,16,36,72 .
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.It Fl a2
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Assembler, applicable to some mainframes.
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Equivalent to
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.Nm
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1,10,16,40,72
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.It Fl c
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.Tn COBOL ,
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normal format.
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Equivalent to
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.Nm
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1,8,12,16,20,55
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.It Fl c2
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.Tn COBOL ,
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compact format (columns 1 to 6 omitted).
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Equivalent to
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.Nm
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1,6,10,14,49
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.It Fl c3
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.Tn COBOL ,
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compact format (columns 1 to 6 omitted), with more tabs than
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.Fl c2 .
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Equivalent to
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.Nm
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1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67
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.It Fl f
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.Tn FORTRAN .
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Equivalent to
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.Nm
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1,7,11,15,19,23
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.It Fl p
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.Tn PL/1 .
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Equivalent to
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.Nm
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1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61
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.It Fl s
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.Tn SNOBOL .
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Equivalent to
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.Nm
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1,10,55
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.It Fl T Ar type
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Indicates the type of terminal.
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.It Fl u
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Assembler, applicable to some mainframes.
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Equivalent to
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.Nm
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1,12,20,44
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.El
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.Sh EXIT STATUS
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.Ex -std
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.Sh ENVIRONMENT
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The
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.Ev COLUMNS
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and
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.Ev TERM
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environment variables affect the execution of
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.Nm
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as described in
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.Xr environ 7 .
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.Pp
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The
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.Fl T
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option overrides
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.Ev TERM .
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If neither
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.Ev TERM
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nor the
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.Fl T
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option are present,
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.Nm
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will fail.
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.Sh SEE ALSO
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.Xr expand 1 ,
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.Xr stty 1 ,
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.Xr tput 1 ,
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.Xr unexpand 1 ,
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.Xr termcap 5
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.Sh STANDARDS
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The
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.Nm
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utility conforms to
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.St -p1003.1 .
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.Sh HISTORY
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A
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.Nm
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utility first appeared in PWB UNIX.
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This implementation was introduced in
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.Nx 6.0 .
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.Sh AUTHORS
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.An Roy Marples Aq roy@NetBSD.org
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.Sh BUGS
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The current
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.Xr termcap 5
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database does not define the set left soft margin
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.Ql ML
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capability for any terminals.
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