Question : Problem of calling Curl by Perl

I have a web-form written in Perl. The program read submitted data and format the data in a CURL command which is output to a SHELL file. Then the Perl  program will execute the SHELL script to run the CURL string to submit the data to another web-form.

However, the CURL string cannot be execute. It is executable if I directly run the SHELL or the CURL string in command line but not if it is called by the Perl program.

I have change the mode of the SHELL file to 711.

Here some some related information:
Curl version: curl 7.10.4 (sparc-sun-solaris2.8) libcurl/7.10.4 OpenSSL/0.9.7a zlib/1.1.4
Perl: 5.6.1
Apache/2.0.52

Any idea?

Answer : Problem of calling Curl by Perl

> .. SHELL file is in mode 711 contain the CURL string,
are you owner of this SHELL file when you try to execute it?
Then permission 700 or better 500 is sufficient, otherwise you need 550 or even 555.

>  system ("sh shell.sh");
depending on your PATH environment variable you probably need a full path here:
  system ("/bin/sh /path/to/your/shell.sh");
same applies to the backticks

Also keep in mind that curl is a bit strange about stdout and stderr, so you probably need to redirect stderr to stdout, take care ..