nl(1)								   User Commands							     nl(1)

NAME

       nl - line numbering filter

SYNOPSIS

       /usr/bin/nl [-p] [-b [type]] [-d [delim]] [-f [type]]
	    [-h [type]] [-i [incr]] [-l [num]] [-n [format]]
	    [-s [sep]] [-w [width]] [-v [startnum]] [file]

       /usr/xpg4/bin/nl [-p] [-b type] [-d delim] [-f type]
	    [-h type] [-i incr] [-l num] [-n format] [-s sep]
	    [-w width] [-v startnum] [file]

DESCRIPTION

       The nl utility reads lines from the named file, or the standard input if no file is named, and reproduces the lines on the standard output.
       Lines are numbered on the left in accordance with the command options in effect.

       nl views the text it reads in terms of logical pages. Line numbering is reset at the start of each logical page. A logical page consists of
       a  header, a body, and a footer section. Empty sections are valid. Different line numbering options are independently available for header,
       body, and footer. For example, -bt (the default) numbers non-blank lines in the body section and does not number any lines  in  the  header
       and footer sections.

       The start of logical page sections are signaled by input lines containing nothing but the following delimiter character(s):

       +-----------------------------+-----------------------------+
       |       Line contents	     |		Start Of	   |
       +-----------------------------+-----------------------------+
       |:::			     |header			   |
       +-----------------------------+-----------------------------+
       |::			     |body			   |
       +-----------------------------+-----------------------------+
       |:			     |footer			   |
       +-----------------------------+-----------------------------+

       Unless optioned otherwise, nl assumes the text being read is in a single logical page body.

OPTIONS

       Command	options  may  appear  in  any  order and may be intermingled with an optional file name. Only one file may be named. The specified
       default is used when the option is not entered on the command line. /usr/xpg4/bin/nl options require option arguments.  A  SPACE  character
       may  separate options from option arguments. /usr/bin/nl options  may have option arguments. If option-arguments of /usr/bin/nl options are
       not specified, these options result in the default. The supported options are:

       -btype	     Specifies which logical page body lines are to be numbered. Recognized types and their meanings are:

		     a	     number all lines

		     t	     number all non-empty lines.

		     n	     no line numbering

		     pexp    number only lines that contain the regular expression specified in exp. See NOTES below.

		     Default type for logical page body is t (text lines numbered).

       -ftype	     Same as -btype except for footer. Default type for logical page footer is n (no lines numbered).

       -ddelim	     The two delimiter characters specifying the start of a logical page section may be changed from the default  characters  (:)
		     to  two  user-specified characters. If only one character is entered, the second character remains the default character (:).
		     No space should appear between the -d and the delimiter characters. To enter a backslash, use two backslashes.

       -htype	     Same as -btype except for header. Default type for logical page header is n (no lines numbered).

       -iincr	     incr is the increment value used to number logical page lines. Default incr is 1.

       -lnum	     num is the number of blank lines to be considered as one. For example, -l2 results in only the second  adjacent  blank  being
		     numbered (if the appropriate -ha, -ba, and/or -fa option is set). Default num is 1.

       -nformat      format is the line numbering format. Recognized values are:

		     ln    left justified, leading zeroes suppressed

		     rn    right justified, leading zeroes suppressed

		     rz    right justified, leading zeroes kept

		     Default format is rn (right justified).

       -p	     Do not restart numbering at logical page delimiters.

       -ssep	     sep is the character(s) used in separating the line number and the corresponding text line. Default sep is a TAB.

       -vstartnum    startnum is the initial value used to number logical page lines. Default startnum is 1.

       -wwidth	     width is the number of characters to be used for the line number. Default width is 6.

OPERANDS

       The following operand is supported:

       file    A path name of a text file to be line-numbered.

EXAMPLES

       Example 1 An example of the nl command

       The command:

	 example% nl -v10 -i10 -d!+ filename1

       will  cause  the  first	line  of the page body to be numbered 10, the second line of the page body to be numbered 20, the third 30, and so
       forth. The logical page delimiters are !+.

ENVIRONMENT VARIABLES

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

EXIT STATUS

       The following exit values are returned:

       0     Successful completion.

       >0    An error occurred.

FILES

       /usr/lib/locale/locale/LC_COLLATE/CollTable

	   Collation table generated by localedef

       /usr/lib/locale/locale/LC_COLLATE/coll.so

	   Shared object containing string transformation library routines

ATTRIBUTES

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

   /usr/bin/nl
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+

   /usr/xpg4/bin/nl
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWxcu4			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pr(1), attributes(5), environ(5), regex(5), regexp(5), standards(5)

NOTES

       Internationalized  Regular  Expressions	are used in the POSIX and "C" locales. In other locales, Internationalized Regular Expressions are
       used if the following two conditions are met:

	   o	  /usr/lib/locale/locale/LC_COLLATE/CollTable is present.

	   o	  /usr/lib/locale/locale/LC_COLLATE/coll.so is not present.

       Otherwise, Simple Regular Expressions are used.

       Internationalized Regular Expressions are explained on regex(5). Simple Regular Expressions are explained on  regexp(5).

SunOS 5.11							    28 Mar 1995 							     nl(1)