Remarks: If you do not supply a target object at the command prompt, the target object is obtained from standard input (stdin). ...

Remarks: If you do not supply a target object at the command prompt, the target object is obtained from standard input (stdin). Stdin data can be accepted from the keyboard, a redirected file, or as piped output from another command. To mark the end of stdin data from the keyboard or in a redirected file, use Control+Z, for End of File (EOF).  If a value that you supply contains spaces, use quotation marks  around the text.  If you enter multiple values, the values must be separated by spaces (for example, a list of site links).