my $newfilename = "$filenamearray[0]" . "-" . $hr . ":" . $min . ":" .
+ $sec . "\." . $filenamearray[1];

[download]

In such cases, I personally prefer interpolation over concatenation: 

my $newfilename = "$filenamearray[0]-$hr:$min:$sec.$filenamearray[1]";

[download]

Appears less cluttered to my eyes (YMMV).  As there's nothing special about either '-', '.' or (single) ':' in double quoted strings, and they can't be part of variable names, you can write them just as is.

Or maybe use sprintf() to get regular zero-padded 2-digit format: 

my $newfilename = sprintf "%s-%02d:%02d:%02d.%s", $filenamearray[0], $
+hr,$min,$sec, $filenamearray[1];

[download]

In reply to Re^2: Add timestamp to file being copied. by almut
in thread Add timestamp to file being copied. by Karger78

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