\" $NetBSD: tabs.1,v 1.6 2014/03/18 18:20:45 riastradh Exp $
\"
\" Copyright (c) 2008 The NetBSD Foundation, Inc.
\" All rights reserved.
\"
\" This code is derived from software contributed to The NetBSD Foundation
\" by Roy Marples.
\"
\" Redistribution and use in source and binary forms, with or without
\" modification, are permitted provided that the following conditions
\" are met:
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\"    notice, this list of conditions and the following disclaimer.
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\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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Dd April 5, 2012
Dt TABS 1
Os
Sh NAME
Nm tabs
Nd set terminal tabs
Sh SYNOPSIS
Nm
Op Fl n Ns | Ns Fl a Ns | Ns Fl a2 Ns | Ns Fl c Ns | Ns Fl c2 \
Ns | Ns Fl c3 Ns | Ns Fl f Ns | Ns Fl p Ns | Ns Fl s Ns | Ns Fl u
Op +m Ns Op n
Op Fl T Ar type
Nm
Op Fl T Ar type
Op + Ns Op n
Ar n1 Ns Op , Ns Ar n2 , Ns Ar ...
Sh DESCRIPTION
The
Nm
utility displays a series of characters that first clears the hardware terminal
tab settings and then initializes the tab stops at the specified positions
and optionally adjusts the margin.
Pp
The phrase "tab-stop position N" means that, from the start of a line of
output, tabbing to position N shall cause the next character output to be in
the (N+1)th column on that line.
Pp
The following options are supported:
Bl -tag -width Fl
It Fl Ar n
Specifies repetitive tab stops separated by a uniform number of columns,
Ar n ,
where
Ar n
is a single digit decimal number.
The default usage of
Nm
with no arguments is equivalent to
Nm
Fl 8 .
When
Fl 0
is used, the tab stops are cleared and no new ones set.
It Fl a
Assembler, applicable to some mainframes.
Equivalent to
Nm
1,10,16,36,72 .
It Fl a2
Assembler, applicable to some mainframes.
Equivalent to
Nm
1,10,16,40,72
It Fl c
Tn COBOL ,
normal format.
Equivalent to
Nm
1,8,12,16,20,55
It Fl c2
Tn COBOL ,
compact format (columns 1 to 6 omitted).
Equivalent to
Nm
1,6,10,14,49
It Fl c3
Tn COBOL ,
compact format (columns 1 to 6 omitted), with more tabs than
Fl c2 .
Equivalent to
Nm
1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67
It Fl f
Tn FORTRAN .
Equivalent to
Nm
1,7,11,15,19,23
It Fl p
Tn PL/1 .
Equivalent to
Nm
1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61
It Fl s
Tn SNOBOL .
Equivalent to
Nm
1,10,55
It Fl T Ar type
Indicates the type of terminal.
It Fl u
Assembler, applicable to some mainframes.
Equivalent to
Nm
1,12,20,44
El
Sh ENVIRONMENT
The
Ev COLUMNS
and
Ev TERM
environment variables affect the execution of
Nm
as described in
Xr environ 7 .
Pp
The
Fl T
option overrides
Ev TERM .
If neither
Ev TERM
nor the
Fl T
option are present,
Nm
will fail.
Sh EXIT STATUS
Ex -std
Sh SEE ALSO
Xr expand 1 ,
Xr stty 1 ,
Xr tput 1 ,
Xr unexpand 1 ,
Xr terminfo 5
Sh STANDARDS
The
Nm
utility conforms to
St -p1003.1 .
Sh HISTORY
A
Nm
utility first appeared in PWB UNIX.
This implementation was introduced in
Nx 6.0 .
Sh AUTHORS
An Roy Marples Aq Mt [email protected]