From: porkchop@invalid.foo   
      
   On Fri, 07 Nov 2025 19:51:28 GMT, Scott Lurndal wrote:   
      
   > It is common for utilities to accept '-' as a filename   
   > which indicates that input should come from stdin.   
   >   
   > For example;   
   >   
   > NAME   
   >        cat - concatenate files and print on the standard output   
      
   Hi Scott & thanks for the input.   
      
   I'm studying cat, grep, etc... & my sed...   
      
   is close to ambiguous (from a newbie's point of view):   
      
   Usage: sed [OPTION]... {script-only-if-no-other-script} [input-file]...   
      
   --   
   :wq   
   Mike Sanders   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)