Man page - nl(1)

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Manual

NL

NAME
SYNOPSIS
DESCRIPTION
AUTHOR
REPORTING BUGS
SEE ALSO

NAME

nl - number lines of files

SYNOPSIS

nl [ OPTION ]... [ FILE ]...

DESCRIPTION

Write each FILE to standard output, with line numbers added.

With no FILE, or when FILE is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.
-b , --body-numbering = STYLE

use STYLE for numbering body lines

-d , --section-delimiter = CC

use CC for logical page delimiters

-f , --footer-numbering = STYLE

use STYLE for numbering footer lines

-h , --header-numbering = STYLE

use STYLE for numbering header lines

-i , --line-increment = NUMBER

line number increment at each line

-l , --join-blank-lines = NUMBER

group of NUMBER empty lines counted as one

-n , --number-format = FORMAT

insert line numbers according to FORMAT

-p , --no-renumber

do not reset line numbers for each section

-s , --number-separator = STRING

add STRING after (possible) line number

-v , --starting-line-number = NUMBER

first line number for each section

-w , --number-width = NUMBER

use NUMBER columns for line numbers

--help

display this help and exit

--version

output version information and exit

Default options are: -bt -d ’\:’ -fn -hn -i1 -l1 -n ’rn’ -s <TAB> -v1 -w6

CC are two delimiter characters used to construct logical page delimiters; a missing second character implies ’:’. As a GNU extension one can specify more than two characters, and also specifying the empty string ( -d ’’) disables section matching.

STYLE is one of:

	a		number all lines
	t		number only nonempty lines
	n		number no lines
	pBRE		number only lines that contain a match for the basic regular expression, BRE

FORMAT is one of:

	ln		left justified, no leading zeros
	rn		right justified, no leading zeros
	rz		right justified, leading zeros

AUTHOR

Written by Scott Bartram and David MacKenzie.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>