long command executed via a variable fails

[Geoffrey KRETZ]

Reini Urban wrote:

> Geoffrey KRETZ schrieb:
>
>> I've got a problem with a shell script used with Cygwin 1.5.10-3 on 
>> W2000 SP4 and W XP SP 2.
>>
>> The following part of code works on all the Unix I've tested 
>> (HP-UX/AIX/Sun Solaris/Linux).
>>
>> With Cygwin,  it doesn't :(
>>
>>
>> *Code:*
>>
>> cmd="long shell command with differents parameters"
>> if [ ! eval $cmd ]; then
>>  echo "Error : $cmd"
>>  exit 1
>> fi
>>
>>
>>
>> instead of eval $cmd, i've tried :
>> - `eval $cmd`
>> - eval `$cmd`
>> - $cmd
>> - `$cmd`
>>
>> I've also try with a function without more success.
>>
>> *Code:*
>>
>> execCmd()
>> {
>>  eval $cmd
>>  return $?
>> }
>>
>> cmd="long shell command with differents parameters"
>> if [ ! execCmd ]; then
>>  echo "Error : $cmd"
>>  exit 1
>> fi
>>
>>
>>
>> The only way I've find is :
>>
>> *Code:*
>>
>> cmd="long shell command with differents parameters"
>> eval $cmd
>> if [ $? -ne 0 ]; then
>>  echo "Error : $cmd"
>>  exit 1
>> fi
>>
>> Is it possible to make it work like the two first exemple or I'm 
>> obliged to use the third solution ?
>
>
> FAQ: http://cygwin.com/faq/faq_3.html#SEC43
> cygwin's /bin/sh is ash, on most other platforms it is /bin/bash.
>
> If you want it to behave it exactly like on other platforms, and you use
> bash specific constructs, use the /bin/bash shebang.
>
If I specified  "#! /bin/bash" at the first line of my shell script, is 
it enough to make Cygwin understand that I want to use bash instead of 
ash ??

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