Hey Patrick,

 >     what is a char **argv ? as this is the first time
 > i've seen this type  of char **argv used ??

    Fine! I'll explain in detail. The goodies passed to main() as argv are
actually just a list of null terminated strings usually representing the
additional words, letters, numbers or flags on the command line.

    For example, the command line "find / *.doc -print", would
have "find" as argv[0], "/path/find" as argv[1],
"/" as argv[2], "*.doc" as argv[3], "-print"
as argv[4], and NULL as argv[5]. That would make argc 4.

There are two ordinary ways to refer to such a list. The first is char *argv[]
... an array of pointers to char. The second way is as char **argv ... a
pointer to a pointer to char. The pointer points to the first string in the
list. Incrementing the pointer, (++argv) makes it point to the second string
and so on, so it is really a convenient way to reference the command line
arguments one at a time.

    The above is a little simplified for a beginner, and makes certain
assumptions. Do not let the forward slashes confuse you. If you are an
MS-Dos or Windows fan, then read them as backslashes (\).

    I hope it helps.

Best wishes,
Bill.
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