Man page - nl(1)
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apt-get install coreutils
Available languages:
en fr es pl nb nl da tr hu sv ja ru ro zh_TW sr zh_CN deManual
| NL(1) | User Commands | NL(1) |
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 logical page delimiters
- -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 for each section
- -s, --number-separator=STRING
- add STRING after (possible) line number
- -v, --starting-line-number=NUMBER
- first line number for each section
- -w, --number-width=NUMBER
- use NUMBER columns for line numbers
- --help
- display this help and exit
- --version
- output version information and exit
Default options are: -bt -d'\:' -fn -hn -i1 -l1 -n'rn' -s<TAB> -v1 -w6
CC are two delimiter characters used to construct logical page delimiters; a missing second character implies ':'. As a GNU extension one can specify more than two characters, and also specifying the empty string (-d '') disables section matching.
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:
AUTHOR
Written by Scott Bartram and David MacKenzie.
REPORTING BUGS
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
SEE ALSO
Full documentation
<https://www.gnu.org/software/coreutils/nl>
or available locally via: info '(coreutils) nl invocation'
Packaged by Debian (9.7-3)
Copyright © 2025 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<https://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.
| June 2025 | GNU coreutils 9.7 |