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161 lines
3.8 KiB
Groff
161 lines
3.8 KiB
Groff
.\" Copyright (c) 2002 Tim J. Robbins.
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.\" 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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.\"
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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 20, 2002
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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 Ar n | Fl a | a2 | c | c2 | c3 | f | p | s | u
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.Op Cm +m Ns Op Ar 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 Cm + Ns Op Ar n
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.Ar n1 Ns Op Ns , Ns Ar n2 , Ns ...
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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 clear the hardware terminal
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tab settings then initialises tab stops at specified positions, and
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optionally adjusts the margin.
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.Pp
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In the first synopsis form, the tab stops set depend on the command line
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options used, and may be one of the predefined formats or at regular
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intervals.
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.Pp
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In the second synopsis form, tab stops are set at positions
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.Ar n1 , n2 ,
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etc.
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If a position is preceded by a
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.Ql + ,
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it is relative to the previous position set.
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No more than 20 positions may be specified.
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.Pp
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If no tab stops are specified, the
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.Dq standard
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.Ux
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tab width of 8 is used.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl Ar n
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Set a tab stop every
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.Ar n
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columns.
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If
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.Ar n
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is 0, the tab stops are cleared but no new ones are set.
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.It Fl a
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Assembler format (columns 1, 10, 16, 36, 72).
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.It Fl a2
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Assembler format (columns 1, 10, 16, 40, 72).
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.It Fl c
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.Tn COBOL
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normal format (columns 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, 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, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46,
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50, 54, 58, 62, 67).
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.It Fl f
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.Tn FORTRAN
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format (columns 1, 7, 11, 15, 19, 23).
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.It Fl p
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.Tn PL/1
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format (columns 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53,
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57, 61).
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.It Fl s
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.Tn SNOBOL
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format (columns 1, 10, 55).
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.It Fl u
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Assembler format (columns 1, 12, 20, 44).
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.It Xo
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.Cm +m Ns Op Ar n ,
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.Cm + Ns Op Ar n
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.Xc
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Set an
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.Ar n
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character left margin, or 10 if
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.Ar n
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is omitted.
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.It Fl T Ar type
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Output escape sequence for the terminal type
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.Ar type .
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.El
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.Sh ENVIRONMENT
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The
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.Ev LANG , LC_ALL , LC_CTYPE
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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 the setting of the
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.Ev TERM
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environment variable.
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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 EXIT STATUS
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.Ex -std
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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 -p1003.1-2001 .
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.Sh HISTORY
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A
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.Nm
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utility appeared in PWB UNIX.
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This implementation was introduced in
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.Fx 5.0 .
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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
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.Ql ML
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(set left soft margin) capability for any terminals.
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