nl - number lines of files

NAME SYNOPSIS DESCRIPTION AUTHOR REPORTING BUGS COPYRIGHT SEE ALSO

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 © 2023 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.