Finally i found the bug.. I had committed a mistake while associating the .pl files with the perl.exe I had used the following command before assoc .pl PERLFILE ftype PERLFILE C:\perl\bin\perl.exe "%1" So the problem was that, the perl.exe would always get only the file name as the argument (%1) and all other arguments were ignored. So now i've changed it to assoc .pl PERLFILE ftype PERLFILE C:\perl\bin\perl.exe "%1" %* So now thw %* accepts all the arguments passed to the perl.exe I thank you for your efforts in helping me in my problems.