On Mon, Sep 29, 2014 at 1:41 PM, Always Learning centos@u62.u22.net wrote:
Thanks. I learned something new today.
Not exactly... Applications that pipe to the sendmail command line program to send messages go back to the dawn of email. MTAs that replace the 'real' sendmail pretty much have to provide that functionality.
Yes I did learn something new.
Just new to you...
I started to use Linux, Centos, in desperation to rid myself of Windoze. I plunged-in, never learned the theory because of inadequate time. Hence I am Always Learning and never falling to be impressed, continuously delighted to be rid of M$ and wishing I have ventured into Linux 10+ years earlier than I did.
If you really want to appreciate the concepts, you should find a unix manual from the days before X was included. Back then there were 5 sections where 1 covered the command line programs, 2 covered system calls, 3 the standard C library, etc. It was small enough that you could read and mostly memorize it, especially section 1, in a few days. The thing to appreciate is that 30+ years later, even in cloned versions, those things were designed well enough that pretty much everything in there still continues to work.