Repeatedly output a specified string.
The yes command outputs a specified string repeatedly until the process is killed. If no arguments are provided, it defaults to outputting "y".
yes (parameters)
String: The string to be repeatedly printed.
[root@localhost ~]# yes testline
testline
testline
testline
testline
testline
testline
testline
testline
...Repeatedly prints "testline" until interrupted by Ctrl+C.