I have a cgi script that calls a perl script (A.pl) to do something in backgroup, when run that perl script in command everything works fine, but when it calls by the CGI script, nothing works. I have tried another perl script (B.pl not cgi) calls A.pl, and it works fine.
The A.pl is chmod 777,

Can someone here help?

Thank you!


Here is my cgi calling A.pl:
#!/usr/bin/perl -w
#
use CGI;
$mycgi = new CGI;

print $mycgi->header;
print $mycgi->start_html(
-title=>'System Tes'',
-BGCOLOR=>'#FFFFCC');


# do something here

# system calls both don't work
system("/mypath/A.pl");

unless (system("/mypath/A.pl")) {
print "system calls failed: $!"; # not seeing this msg from browser
}


# print HTML message here, is seen from browser

print $mycgi->end_html;
exit;