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.
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, –first-page=NUMBER
- first line number on each logical page
- -w, –number-width=NUMBER
- use NUMBER columns for line numbers
- display this help and exit
- 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:
- number all lines
- number only nonempty lines
- number no lines
- number only lines that contain a match for the basic regular expression, BRE
FORMAT is one of:
- left justified, no leading zeros
- right justified, no leading zeros
- right justified, leading zeros
Written by Scott Bartram and David MacKenzie.
Report bugs to <email@example.com>.
Copyright © 2008 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.
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.