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tabs

tabs(1) 						      General Commands Manual							   tabs(1)

NAME

       tabs - set tabs on a terminal

SYNOPSIS

       tabs [options]] [tabstop-list]

DESCRIPTION

       The  tabs program clears and sets tab-stops on the terminal.  This uses the terminfo clear_all_tabs and set_tab capabilities.  If either is
       absent, tabs is unable to clear/set tab-stops.  The terminal should be configured to use hard tabs, e.g.,

	   stty tab0

       Like clear(1), tabs writes to the standard output.  You can redirect the standard output to a  file  (which  prevents  tabs  from  actually
       changing the tabstops), and later cat the file to the screen, setting tabstops at that point.

OPTIONS

   General Options
       -Tname
	    Tell tabs which terminal type to use.  If this option is not given, tabs will use the $TERM environment variable.  If that is not set,
	    it will use the ansi+tabs entry.

       -d   The debugging option shows a ruler line, followed by two data lines.  The first data line shows the  expected  tab-stops  marked  with
	    asterisks.	The second data line shows the actual tab-stops, marked with asterisks.

       -n   This option tells tabs to check the options and run any debugging option, but not to modify the terminal settings.

       -V   reports the version of ncurses which was used in this program, and exits.

       The tabs program processes a single list of tab stops.  The last option to be processed which defines a list is the one that determines the
       list to be processed.

   Implicit Lists
       Use a single number as an option, e.g., "-5" to set tabs at the given interval (in this case 1, 6, 11, 16, 21, etc.).  Tabs are repeated up
       to the right margin of the screen.

       Use "-0" to clear all tabs.

       Use "-8" to set tabs to the standard interval.

   Explicit Lists
       An  explicit  list can be defined after the options (this does not use a "-").  The values in the list must be in increasing numeric order,
       and greater than zero.  They are separated by a comma or a blank, for example,

	   tabs 1,6,11,16,21
	   tabs 1 6 11 16 21

       Use a "+" to treat a number as an increment relative to the previous value, e.g.,

	   tabs 1,+5,+5,+5,+5

       which is equivalent to the 1,6,11,16,21 example.

   Predefined Tab-Stops
       X/Open defines several predefined lists of tab stops.

       -a   Assembler, IBM S/370, first format

       -a2  Assembler, IBM S/370, second format

       -c   COBOL, normal format

       -c2  COBOL compact format

       -c3  COBOL compact format extended

       -f   FORTRAN

       -p   PL/I

       -s   SNOBOL

       -u   UNIVAC 1100 Assembler

PORTABILITY

       IEEE Std 1003.1/The Open Group  Base Specifications Issue 7 (POSIX.1-2008) describes a tabs utility.  However

       o   This standard describes a +m option, to set a terminal's left-margin.  Very few of the entries in the terminal  database  provide  this
	   capability.

       o   There is no counterpart in X/Open Curses Issue 7 for this utility, unlike tput(1).

       The -d (debug) and -n (no-op) options are extensions not provided by other implementations.

       Documentation  for  other  implementations states that there is a limit on the number of tab stops.  While some terminals may not accept an
       arbitrary number of tab stops, this implementation will attempt to set tab stops up to the right margin of the screen, if  the  given  list
       happens to be that long.

SEE ALSO

       tset(1), infocmp(1), ncurses(3NCURSES), terminfo(5).

       This describes ncurses version 6.1 (patch 20180127).

																	   tabs(1)

%15s	means the filed is a string on 15 character
-	means it will be left justify
%2d	means field is a decimal on 2 character
%6d	means field is a decimal on 6 character
\n	add new line otherwise it will continue on the same line