NL

nl − number lines of files

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

Write each FILE to standard output, with line numbers added. With no FILE, or when FILE is -, read standard input.

−b, −−body−numbering=STYLE

use STYLE for numbering body lines

−d, −−section−delimiter=CC

use CC for separating logical pages

−f, −−footer−numbering=STYLE

use STYLE for numbering footer lines

−h, −−header−numbering=STYLE

use STYLE for numbering header lines

−i, −−page−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 at logical pages

−s, −−number−separator=STRING

add STRING after (possible) line number

−v, −−first−page=NUMBER

first line number on each logical page

−w, −−number−width=NUMBER

use NUMBER columns for line numbers

−−help

display this help and exit

−−version

output version information and exit

By default, selects −v1 −i1 −l1 −sTAB −w6 −nrn −hn −bt −fn. CC are two delimiter characters for separating logical pages, a missing second character implies :. Type \\ for \. STYLE is one of:

a

number all lines

t

number only nonempty lines

n

number no lines

pREGEXP

number only lines that contain a match for REGEXP

FORMAT is one of:

ln

left justified, no leading zeros

rn

right justified, no leading zeros

rz

right justified, leading zeros

Written by Scott Bartram and David MacKenzie.

Report bugs to <bug-textutils@gnu.org>.

Copyright © 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

The full documentation for nl is maintained as a Texinfo manual. If the info and nl programs are properly installed at your site, the command

info nl

should give you access to the complete manual.