Keep first line untouched by a command, passing it directly…
Keep first line untouched by a command, passing it directly to stdout. More information: https://github.com/eBay/tsv-utils#keep-header.
keep-header {{path/to/file}} -- sort
keep-header {{path/to/file}} -- {{command}}
cat {{path/to/file}} | keep-header -- {{command}}
keep-header {{path/to/file}} -- grep {{pattern}}