Because the file isn't there :) 
$ dir /b nofile.plx
File Not Found

$ perl nofile.plx
Can't open perl script "nofile.plx": No such file or directory

$ echo die 6; > nofile.plx

$ dir /b nofile.plx
nofile.plx

$ perl nofile.plx
6 at nofile.plx line 1.

$ del nofile.plx

$ dir /b nofile.plx
File Not Found

$ perl nofile.plx
Can't open perl script "nofile.plx": No such file or directory

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In reply to Re^2: hello world execution error by Anonymous Monk
in thread re: hello world execution error by kuladeep

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