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42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# nl
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> Number lines from a file or from `stdin`.
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> More information: <https://manned.org/nl>.
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- Number non-blank lines in a file:
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`nl {{path/to/file}}`
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- Read from `stdin`:
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`{{command}} | nl`
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- Number [a]ll body lines including blank lines or do [n]ot number body lines:
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`nl {{[-b|--body-numbering]}} {{a|n}} {{path/to/file}}`
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- Number only the body lines that match a basic `regex` (BRE) [p]attern:
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`nl {{[-b|--body-numbering]}} p'FooBar[0-9]' {{path/to/file}}`
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- Use a specific increment for line numbering:
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`nl {{[-i|--line-increment]}} {{increment}} {{path/to/file}}`
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- Specify the line numbering format to [r]ight or [l]eft justified, keeping leading [z]eros or [n]ot:
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`nl {{[-n|--number-format]}} {{rz|ln|rn}}`
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- Specify the line numbering's width (6 by default):
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`nl {{[-w|--number-width]}} {{col_width}} {{path/to/file}}`
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- Use a specific string to separate the line numbers from the lines (`TAB` by default):
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`nl {{[-s|--number-separator]}} {{separator}} {{path/to/file}}`
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