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 separating logical pages

−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 at logical pages

−s, −−number−separator=STRING

add STRING after (possible) line number

−v, −−starting−line−number=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

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: <http://www.gnu.org/software/coreutils/>

Report nl translation bugs to <http://translationproject.org/team/>

SEE ALSO

Full documentation at: <http://www.gnu.org/software/coreutils/nl>

or available locally via: info '(coreutils) nl invocation'

COPYRIGHT

Copyright © 2015 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://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.