I believe if you re-read a little more closely, the whole point of the exercise was not to have the #! at the top of the script. On 04/24/2015 01:36 PM, Valeri Galtsev wrote: > On Fri, April 24, 2015 12:04 pm, John R Pierce wrote: >> On 4/24/2015 9:47 AM, 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 and enters the path to such a script, it would also run in ksh. >>> That would only be true if you "sourced" the script from your shell. >> oh fun, just did some tests (using c6.latest). if you're in bash, >> >>>./script (sans shebang)<<< runs it in bash. if you're in dash or csh, >> ./script runs it in sh. if you're in ksh, it runs it in ksh. >> > Wow! Surprise ;-) > > I just tested it on my FreeBSD workstation, and all works as expected > (i.e. the script obeys shebang). Just in case, here is the contents of my > test script: > > > ######## > #!/bin/sh > > readlink /proc/$$/file > ######## > > ( note that that "file" is because I'm using FreeBSD /proc, for Linux you > may need to replace the line with something like: > > readlink /proc/$$/exe > > Now the fun part > > in bash: > > $ echo $0 > bash > > $ ./test > /bin/sh > > in tcsh > > % echo $0 > tcsh > > % ./test > /bin/sh > > in zsh > > % echo $0 > zsh > > % ./test > /bin/sh > > But yet funnier thing: > > $ bash ./test > /usr/local/bin/bash > > $ tcsh ./test > /bin/tcsh > > $ zsh ./test > /usr/local/bin/zsh > > > Well, no creepy surprises for me ! ;-) > > (you can do the same on Linux of your choice and see if it behaves ;-) > > Thanks. > Valeri > > ++++++++++++++++++++++++++++++++++++++++ > Valeri Galtsev > Sr System Administrator > Department of Astronomy and Astrophysics > Kavli Institute for Cosmological Physics > University of Chicago > Phone: 773-702-4247 > ++++++++++++++++++++++++++++++++++++++++ > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos -- public gpg key id: AE60F64C