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, --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, --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
Report nl bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/>
COPYRIGHT
Copyright © 2009 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.
SEE ALSO
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 coreutils 'nl invocation' | |