NL("1") manual page
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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
- --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
Written by Scott Bartram and David MacKenzie.
Report bugs to <bug-coreutils@gnu.org>.
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 coreutils ’nl invocation’
should give you access to the complete manual.
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