Stephen Harris <lists at spuddy.org> wrote: > On Fri, Apr 24, 2015 at 09:47:24AM -0700, Gordon Messmer wrote: > > On 04/24/2015 03:57 AM, Pete Geenhuizen wrote: > > >if you leave it out the script will run in whatever environment it > > >currently is in. > > > > I'm reasonably certain that a script with no shebang will run with > > /bin/sh. I interpret your statement to mean that if a user is using ksh > > "It depends". > > On older Unix-type systems which didn't understand #! then the shell > itself did the work. At least csh did (sh didn't necessary). If the > first character was a # then csh assumed it was a csh script, otherwise > it assumed a sh script. That's why a lot of real old scripts began with : As mentioned in the other mail, nearly all UNIX versions did support #! in the mid-1980s. The only exception was AT&T. Even the first (realtime) UNIX clone UNOS added support for #! in 1985, but this support was not in the kernel but in the standard command interpreter. Jörg -- EMail:joerg at schily.net (home) Jörg Schilling D-13353 Berlin joerg.schilling at fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.org/private/ http://sourceforge.net/projects/schilytools/files/'