On Sep 29, 2014, at 14:44, m.roth at 5-cent.us wrote: > Always Learning wrote: >> On Mon, 2014-09-29 at 10:49 -0500, Les Mikesell wrote: >>> On Mon, Sep 29, 2014 at 8:40 AM, Always Learning <centos at u62.u22.net> >>> wrote: > <snip> >>>> 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. >> >> 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. > > A *very* strong recommendation: find a copy of Frisch's Essential Systems > Administration, published by O'Reilly. Some of it's out of date, some more > Unix than Linux... but read chapter 2, "The Unix Way". A *lot* will be a > lot clearer. > > mark "been shoving this at people for > 15 years I second and third that recommendation. A great exercise is to use that book as a foundation, and to realize that the “what to do” has not changed that much, but the “how to do it” changes hourly. Each year as I cull my tech library, the O’Reilly books are almost never passed on to the local library. I can count on them to show the best practices / philosophies / approaches, and then I research what has changed since it was published by directed web site searching and man paging. Don