Less than

Redirect data to stdin. More information: https://gnu.org/software/bash/manual/bash.html#Redirecting-Input.

• Redirect a file to stdin (achieves the same effect as cat file.txt |):

{{command}} < {{path/to/file.txt}}

• Create a here document and pass that into stdin (requires a multiline command):

{{command}} << {{EOF}} <Enter> {{multiline_data}} <Enter> {{EOF}}

• Create a here string and pass that into stdin (achieves the same effect as echo string |):

{{command}} <<< {{string}}