Perl script unix cshell: running external app.

Hi Guys,

Ive started to mess around with some perl scripting in unix and am wanting to make a script which I can give
two parameters, an image name, and a suffix.  The script will then run a command and hopefully tell me the PID of the process that was1 run.
As an example of the manual way I am doing things, I type in:
   shell>nohup make MAKEFLAG_J"-j20 -l20" BIN_SUFFIX="some_suffix" some_image >& build.log &
   [1] 12679
   shell>
So the thing to note here is that when the above command is run, it returns the PID for the new process.. 12679 in this case.  I would like my script to capture this, but more importantly run the exact command as if it were typed in manually.  Also, all output from the make is redirected into a file called "build.log".

My script could be called like this:  script_name <some_image> <some_suffix>

So far, my file is like this:
------------------------------

#!/usr/local/bin/perl -w

$IMAGE  = $ARGV[0];
$SUFFIX = $ARGV[1];

$PID = `nohup make MAKEFLAG_J=\"-j20 -l10\" BIN_SUFFIX=$SUFFIX $IMAGE \>\& build.log \&`;
system($PID);

print "\n---------- Build Summary ----------";
print "\n\tImage:  $IMAGE\n\tSuffix: $SUFFIX";
print "\n\tStatus: $PID";
print "\n-----------------------------------\n\n";

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The above doesnt quite seem to work.. I can get the actual build to happen when I remove the redirect
to build.log.  Without this bit, I get a message saying "Sending output to nohup.out".

Any help is appreciated.