[CentOS] Real sh? Or other efficient shell for non-interactive scripts

Fri Apr 24 19:47:50 UTC 2015
John R Pierce <pierce at hogranch.com>

On 4/24/2015 12:32 PM, Gordon Messmer wrote:
> On 04/24/2015 09:59 AM, Steve Lindemann wrote:
>> A script with no shebang will run in the environment of the account
>> running the script.
> Bad test on my part, apparently.
> $ python
> >>> import os
> >>> os.execv('/home/gmessmer/test', ('test',))
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> OSError: [Errno 8] Exec format error
> So a script with no shebang will fail when the shell calls exec().  If 
> that's so, then starting the executable script with an interpreter is 
> probably shell-defined.  In other words, each shell might do something 
> different to run a script that has no shebang. Most probably do 
> default to trying itself as the interpreter first.  Interesting. 

is file test chmod +x  ?

john r pierce, recycling bits in santa cruz