Re^2: Executing an application in Perl/CGI

system 'some_command' && die 'cannot execute some_command';
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Really, both this and the OP's attempt get it wrong due to precedency issues. In fact I find myself repeating once again that as a rule of thumb, high precedence logical operators are for values and low precedence ones are for flow control. In particular, the OP's code appears to work because the die is never actually reached, while yours is the same as

system(die('cannot execute some_command'));
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So the program dies before calling system.

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Re^3: Executing an application in Perl/CGI by Anonymous Monk on May 22, 2007 at 19:38 UTC
Even with the fix the program still dies on the system call. It works perfectly fine but run in a web browser, it dies.	[reply]
Re^4: Executing an application in Perl/CGI by blazar (Canon) on May 22, 2007 at 19:42 UTC
Even with the fix the program still dies on the system call. It works perfectly fine but run in a web browser, it dies. Didn't `$!` and `$?` help?	[reply] [d/l] [select]