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