🚀 go-pugleaf

In article <1992Jul20.221450.15442@cs.sfu.ca> oneill@cs.sfu.ca (Richard O'Neill) writes:

   I belive that NeXT implemented the standard BSD4.3 cron program, so either
   Sun chose to be different, or it is a SysVism that they've adopted. 
   Personally I have always believed that they re-wrote all the cron type code
   because the 'at' command didn't work in SunOS 3.5.

Sun adopted System V cron for SunOS 4.  the idea is good, but the
implementation leaves much to be desired.  there are problems with
cron not "doing the right thing" at the change to/from daylight
savings time.  there are also reports of cron executing some jobs
multiple times.  it also executes your cron jobs with a shell that
thinks it is interactive;  this causes no end of confusion for people
who have always had something like this in their .cshrc:

if (! $?prompt ) then
  exit
endif

to differentiate between interactive and non-interactive shell executions.

there are other cron implementations out there.  i believe that
someone mentioned Paul Vixie's as a viable alternative.
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Vivek Khera, Gradual Student/Systems Guy  Department of Computer Science
Internet:   khera@cs.duke.edu             Duke University
            (MIME mail accepted)          Durham, NC 27706     (919) 660-6528