$abc_cmd = "abc.exe" -i $input_file -o $output_file";
This doesn't compile.
system $abc_cmd;
You're neither checking the return value of system, nor are you checking $?. If you expect you have a problem with $abc_cmd, checking those values is something you ought to be before asking others to debug your program.

In reply to Re: Accessing an executable from perl script by JavaFan
in thread Accessing an executable from perl script by abcdefg

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