2016-11-30 21:54:59 +00:00
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# nl
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> A utility for numbering lines, either from a file, or from standard input.
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2021-04-01 16:54:26 +01:00
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> More information: <https://www.gnu.org/software/coreutils/nl>.
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2016-11-30 21:54:59 +00:00
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2018-01-25 10:11:05 +00:00
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- Number non-blank lines in a file:
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2016-11-30 21:54:59 +00:00
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2017-04-15 00:05:38 +01:00
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`nl {{file}}`
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2016-11-30 21:54:59 +00:00
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2018-01-25 10:11:05 +00:00
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- Read from standard output:
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`cat {{file}} | nl {{options}} -`
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2017-04-15 00:05:38 +01:00
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- Number only the lines with printable text:
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2016-11-30 21:54:59 +00:00
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2017-04-15 00:05:38 +01:00
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`nl -t {{file}}`
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2016-11-30 21:54:59 +00:00
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2018-01-25 10:11:05 +00:00
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- Number all lines including blank lines:
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`nl -b a {{file}}`
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2017-04-15 00:05:38 +01:00
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- Number only the body lines that match a basic regular expression (BRE) pattern:
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2016-11-30 21:54:59 +00:00
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2017-04-15 00:05:38 +01:00
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`nl -b p'FooBar[0-9]' {{file}}`
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