1NL(1) User Commands NL(1)
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6 nl - number lines of files
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9 nl [OPTION]... [FILE]...
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12 Write each FILE to standard output, with line numbers added.
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14 With no FILE, or when FILE is -, read standard input.
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16 Mandatory arguments to long options are mandatory for short options
17 too.
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19 -b, --body-numbering=STYLE
20 use STYLE for numbering body lines
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22 -d, --section-delimiter=CC
23 use CC for logical page delimiters
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25 -f, --footer-numbering=STYLE
26 use STYLE for numbering footer lines
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28 -h, --header-numbering=STYLE
29 use STYLE for numbering header lines
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31 -i, --line-increment=NUMBER
32 line number increment at each line
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34 -l, --join-blank-lines=NUMBER
35 group of NUMBER empty lines counted as one
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37 -n, --number-format=FORMAT
38 insert line numbers according to FORMAT
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40 -p, --no-renumber
41 do not reset line numbers for each section
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43 -s, --number-separator=STRING
44 add STRING after (possible) line number
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46 -v, --starting-line-number=NUMBER
47 first line number for each section
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49 -w, --number-width=NUMBER
50 use NUMBER columns for line numbers
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52 --help display this help and exit
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54 --version
55 output version information and exit
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57 Default options are: -bt -d'\:' -fn -hn -i1 -l1 -n'rn' -s<TAB> -v1 -w6
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59 CC are two delimiter characters used to construct logical page delim‐
60 iters; a missing second character implies ':'. As a GNU extension one
61 can specify more than two characters, and also specifying the empty
62 string (-d '') disables section matching.
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64 STYLE is one of:
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66 a number all lines
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68 t number only nonempty lines
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70 n number no lines
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72 pBRE number only lines that contain a match for the basic regular ex‐
73 pression, BRE
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75 FORMAT is one of:
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77 ln left justified, no leading zeros
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79 rn right justified, no leading zeros
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81 rz right justified, leading zeros
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84 Written by Scott Bartram and David MacKenzie.
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87 GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
88 Report any translation bugs to <https://translationproject.org/team/>
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91 Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU
92 GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
93 This is free software: you are free to change and redistribute it.
94 There is NO WARRANTY, to the extent permitted by law.
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97 Full documentation <https://www.gnu.org/software/coreutils/nl>
98 or available locally via: info '(coreutils) nl invocation'
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102GNU coreutils 9.3 September 2023 NL(1)