The mainframes of the 60's and 70's all used 6-bit characters (and often different encodings for the non alphanumeric characters).  So the Unix folks, including me, had experience with octal long before Dec. Steve ----- Original Message ----- From: "Warren Toomey" Something I've been meaning to ask for a while: why Unix and octal on the PDP-11? Because of the DEC documentation? -------------- next part -------------- An HTML attachment was scrubbed... URL: