Section 1 · User commands

nl.1

Package: coreutils-common

NL

NAME
SYNOPSIS
DESCRIPTION
AUTHOR
REPORTING BUGS
COPYRIGHT
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/>

COPYRIGHT

Copyright © 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.