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OpenSolaris 2009.06 - man page for tabs (opensolaris section 1)

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tabs(1) 				  User Commands 				  tabs(1)

NAME
       tabs - set tabs on a terminal

SYNOPSIS
       tabs [-n | --file
	     [[-code] | -a | -a2 | -c | -c2 | -c3 | -f | -p | -s | -u]]
	     q!! [+m [n]] [-T type]

       tabs [-T type] [+ m [n]] n1 [, n2 ,...]

DESCRIPTION
       The  tabs  utility sets the tab stops on the user's terminal according to a tab specifica-
       tion, after clearing any previous settings. The user's terminal must  have  remotely  set-
       table hardware tabs.

OPTIONS
       The following options are supported. If a given flag occurs more than once, the last value
       given takes effect:

       -T type	   tabs needs to know the type of terminal in order to set tabs and margins. type
		   is a name listed in term(5). If no -T flag is supplied, tabs uses the value of
		   the environment variable TERM. If the value of TERM is NULL	or  TERM  is  not
		   defined in the environment (see environ(5)), tabs uses ansi+tabs as the termi-
		   nal type to provide a sequence that will work for many terminals.

       +m[n]	   The margin argument may be used for some terminals. It causes all tabs  to  be
		   moved  over	n  columns  by making column n+1 the left margin.  If +m is given
		   without a value of n, the value assumed is 10. For a TermiNet, the first value
		   in  the  tab  list  should  be  1, or the margin will move even further to the
		   right. The normal (leftmost) margin on most terminals is obtained by +m0.  The
		   margin for most terminals is reset only when the +m flag is given explicitly.

   Tab Specification
       Four  types  of tab specification are accepted.	They are described below: canned, repeti-
       tive (-n), arbitrary (n1,n2,...), and file (-file).

       If no tab specification is given, the default value is -8, that is,  UNIX  system  ``stan-
       dard'' tabs. The lowest column number is 1. Note:  For tabs, column 1 always refers to the
       leftmost column on a terminal, even one whose column markers begin at 0, for example,  the
       DASI 300, DASI 300s, and DASI 450.

   Canned -code
       Use one of the codes listed below to select a canned set of tabs. If more than one code is
       specified, the last code option will be used.  The legal codes and their meanings  are  as
       follows:

       -a     1,10,16,36,72 Assembler, IBM S/370, first format

       -a2    1,10,16,40,72

	      Assembler, IBM S/370, second format

       -c     1,8,12,16,20,55

	      COBOL, normal format

       -c2    1,6,10,14,49

	      COBOL  compact format (columns 1-6 omitted). Using this code, the first typed char-
	      acter corresponds to card column 7, one space gets you  to  column  8,  and  a  tab
	      reaches column 12. Files using this tab setup should include a format specification
	      as follows (see fspec(4)):

		<:t-c2 m6 s66 d:>

       -c3    1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67

	      COBOL compact format (columns 1-6 omitted), with more tabs than -c2.  This  is  the
	      recommended  format  for	COBOL.	The  appropriate  format  specification  is  (see
	      fspec(4)):

		<:t-c3 m6 s66 d:>

       -f     1,7,11,15,19,23

	      FORTRAN

       -p     1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61

	      PL/I

       -s     1,10,55

	      SNOBOL

       -u     1,12,20,44

	      UNIVAC 1100 Assembler

   Repetitive
       -n     A repetitive specification requests tabs at columns 1+n, 1+2*n, etc., where n is	a
	      single-digit  decimal  number. Of particular importance is the value 8: this repre-
	      sents the UNIX system ``standard'' tab setting, and is the most likely tab  setting
	      to  be  found  at a terminal. When -0 is used, the tab stops are cleared and no new
	      ones are set.

   Arbitrary
       See OPERANDS.

   File
       -file	If the name of a file is given, tabs reads the first line of the file,	searching
		for a format specification (see fspec(4)). If it finds one there, it sets the tab
		stops according to it, otherwise it sets them as -8. This type	of  specification
		may be used to make sure that a tabbed file is printed with correct tab settings,
		and would be used with the pr command:

		  example% tabs - file; pr file

       Tab and margin setting is performed via the standard output.

OPERANDS
       The following operand is supported:

       n1[,n2,...]	     The arbitrary format consists of tab-stop values separated by commas
			     or  spaces. The tab-stop values must be positive decimal integers in
			     ascending order. Up to 40 numbers are allowed. If any number (except
			     the  first one) is preceded by a plus sign, it is taken as an incre-
			     ment  to  be  added  to  the  previous  value.  Thus,  the   formats
			     1,10,20,30, and 1,10,+10,+10 are considered identical.

EXAMPLES
       Example 1 Using the tabs command

       The following command is an example using -code ( canned specification) to set tabs to the
       settings required by the IBM assembler:	columns 1, 10, 16, 36, 72:

	 example% tabs -a

       The next command is an example of using -n  (repetitive	specification),  where	n  is  8,
       causes  tabs to be set every eighth position: 1+(1*8), 1+(2*8), ... which evaluate to col-
       umns 9, 17, ...:

	 example% tabs -8

       This command uses n1,n2,... (arbitrary specification) to set tabs at columns 1, 8, and 36:

	 example% tabs 1,8,36

       The last command is an example of using -file (file specification) to indicate  that  tabs
       should be set according to the first line of $HOME/fspec.list/att4425  (see fspec(4)).

	 example% tabs -$HOME/fspec.list/att4425

ENVIRONMENT VARIABLES
       See  environ(5)	for  descriptions  of the following environment variables that affect the
       execution of tabs: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.

       TERM	Determine the terminal type. If this variable is unset or null,  and  if  the  -T
		option is not specified, terminal type ansi+tabs will be used.

EXIT STATUS
       The following exit values are returned:

       0      Successful completion.

       >0     An error occurred.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       expand(1), newform(1), pr(1), stty(1), tput(1), fspec(4), terminfo(4), attributes(5), env-
       iron(5), term(5), standards(5)

NOTES
       There is no consistency among different terminals regarding ways of clearing tabs and set-
       ting the left margin.

       tabs  clears  only 20 tabs (on terminals requiring a long sequence), but is willing to set
       64.

       The tabspec used with the tabs command is different from the one  used  with  the  newform
       command.  For  example, tabs -8 sets every eighth position; whereas newform -i-8 indicates
       that tabs are set every eighth position.

SunOS 5.11				    1 Feb 1995					  tabs(1)
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