mirror of
https://github.com/ivuorinen/cheatsheet-tldr.git
synced 2026-01-26 11:33:59 +00:00
26 lines
733 B
Plaintext
26 lines
733 B
Plaintext
---
|
|
syntax: markdown
|
|
tags: [tldr, common]
|
|
source: https://github.com/tldr-pages/tldr.git
|
|
---
|
|
# keep-header
|
|
|
|
> Keep first line untouched by a command, passing it directly to `stdout`.
|
|
> More information: <https://github.com/eBay/tsv-utils#keep-header>.
|
|
|
|
- Sort a file and keep the first line at the top:
|
|
|
|
`keep-header {{path/to/file}} -- sort`
|
|
|
|
- Output first line directly to `stdout`, passing the remainder of the file through the specified command:
|
|
|
|
`keep-header {{path/to/file}} -- {{command}}`
|
|
|
|
- Read from `stdin`, sorting all except the first line:
|
|
|
|
`cat {{path/to/file}} | keep-header -- {{command}}`
|
|
|
|
- Grep a file, keeping the first line regardless of the search pattern:
|
|
|
|
`keep-header {{path/to/file}} -- grep {{pattern}}`
|