yes - Affirms repetitively
The yes command repeatedly outputs y, or the locale's equivalent of a y, or, if specified, explication. (The LC_MESSAGES variable determines the locale's equivalent of y or n (for yes/no queries)).
command is useful for providing continuous
input to a program. Terminate output by pressing the Interrupt key sequence.
To delete all files in a directory (using the rm command) and automatically send an affirmative response to the request for confirmation, enter: yes | rm -i *
Determines the behavior of character classes used in the extended regular expression defined for the yesexpr locale keyword in the LC_MESSAGES category. Determines the locale for the processing of affirmative responses.