Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
COL(1)			FreeBSD	General	Commands Manual			COL(1)

NAME
     col -- filter reverse line	feeds from input

SYNOPSIS
     col [-bfpx] [-l num]

DESCRIPTION
     Col filters out reverse (and half reverse)	line feeds so the output is in
     the correct order with only forward and half forward line feeds, and
     replaces white-space characters with tabs where possible.	This can be
     useful in processing the output of	nroff(1) and tbl(1).

     Col reads from standard input and writes to standard output.

     The options are as	follows:

     -b	    Do not output any backspaces, printing only	the last character
	    written to each column position.

     -f	    Forward half line feeds are	permitted (``fine'' mode).  Normally
	    characters printed on a half line boundary are printed on the fol-
	    lowing line.

     -p	    Force unknown control sequences to be passed through unchanged.
	    Normally, col will filter out any control sequences	from the input
	    other than those recognized	and interpreted	by itself, which are
	    listed below.

     -x	    Output multiple spaces instead of tabs.

     -lnum  Buffer at least num	lines in memory.  By default, 128 lines	are
	    buffered.

     The control sequences for carriage	motion that col	understands and	their
     decimal values are	listed in the following	table:

     ESC-7	      reverse line feed	(escape	then 7)
     ESC-8	      half reverse line	feed (escape then 8)
     ESC-9	      half forward line	feed (escape then 9)
     backspace	      moves back one column (8); ignored in the	first column
     carriage return  (13)
     newline	      forward line feed	(10); also does	carriage return
     shift in	      shift to normal character	set (15)
     shift out	      shift to alternate character set (14)
     space	      moves forward one	column (32)
     tab	      moves forward to next tab	stop (9)
     vertical tab     reverse line feed	(11)

     All unrecognized control characters and escape sequences are discarded.

     Col keeps track of	the character set as characters	are read and makes
     sure the character	set is correct when they are output.

     If	the input attempts to back up to the last flushed line,	col will dis-
     play a warning message.

SEE ALSO
     expand(1),	nroff(1), tbl(1)

STANDARDS
     The col utility conforms to the Single UNIX Specification,	Version	2. The
     -l	option is an extension to the standard.

HISTORY
     A col command appeared in Version 6 AT&T UNIX.

FreeBSD	9.3			 June 17, 1991			   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS | HISTORY

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=col&sektion=1&manpath=Red+Hat+Linux%2fi386+9>

home | help