Thanks a lot! I can very well understand the logic of parsing the csv file. The error which I got was :

Backticks found where operator expected at wmic.pl line 11, at end of 
+line
    (Missing semicolon on previous line?)
syntax error at wmic.pl line 11, near "], `wmic process list full /for
+mat"
  (Might be a runaway multi-line // string starting on line 6)
Can't find string terminator "`" anywhere before EOF at wmic.pl line 1
+1.
[download]

I am using perl version 5.18. But I made an alternative code to redirect the stdout of the wmic command to an array and got the output in a text file. The only thing I am was not able to understand was the text parsing logic using the map function. Now got it. Many thanks, once again!