tldr/pages/linux/nl.md

25 lines
485 B
Markdown
Raw Normal View History

2016-11-30 21:54:59 +00:00
# nl
> A utility for numbering lines, either from a file, or from standard input.
- Number lines in a file:
`nl {{source_file}}`
- Number lines where there is printable text only:
`nl -t {{source_file}}`
- Number lines that match a regular expression (Starting with a Capital
A is Exampled):
`nl -b p^A {{source_file}}`
- Can be useful as an alternative to grep {{source_file}} -n
{{search_term}}:
`nl ./file | grep match`
Which outputs `{{line_number}} {{search_term}}`