tldr/pages/common/nl.md

37 lines
888 B
Markdown
Raw Normal View History

2016-11-30 21:54:59 +00:00
# nl
> Number lines from a file or from `stdin`.
> More information: <https://manned.org/nl.1p>.
2016-11-30 21:54:59 +00:00
- Number non-blank lines in a file:
2016-11-30 21:54:59 +00:00
2022-12-04 09:12:49 +00:00
`nl {{path/to/file}}`
2016-11-30 21:54:59 +00:00
- Read from `stdin`:
`{{command}} | nl -`
- Number [a]ll [b]ody lines including blank lines or do [n]ot number [b]ody lines:
2016-11-30 21:54:59 +00:00
`nl -b {{a|n}} {{path/to/file}}`
2016-11-30 21:54:59 +00:00
- Number only the [b]ody lines that match a basic regular expression (BRE) [p]attern:
`nl -b p'FooBar[0-9]' {{path/to/file}}`
- Use a specific [i]ncrement for line numbering:
2016-11-30 21:54:59 +00:00
`nl -i {{increment}} {{path/to/file}}`
- Specify the line numbering format to [r]ight or [l]eft justified, keeping leading [z]eros or [n]ot:
`nl -n {{rz|ln|rn}}`
- Specify the line numbering's [w]idth (6 by default):
`nl -w {{col_width}} {{path/to/file}}`
- Use a specific string to [s]eparate the line numbers from the lines (TAB by default):
`nl -s {{separator}} {{path/to/file}}`