yes - output a string repeatedly until killed

Yes command without any options

$ yes

To repeatedly generate any message 

$ yes This is linux

To install packages without having to press “y” using pipe

$ yes | apt install <package_name>

$ yes | yes | yum install <package_name>

To make yes command outputs "yes" in a constant stream to the rm -i command

$ yes | rm -i *.txt

To make yes command outputs "n" in a constant stream to the rm -i command

$ yes n | rm -i *.txt

regards,

T.Dhanasekar