Two quick questions for the gurus:
1. How are nested parenthesis in a match m// backreferenced? I have a
folder full of files:
file_3.0
file_3.0.1
file_3.0.1a
file_3.0.1b
file_3.0.10
file_3.1
file_3.1.1
file_3.2a
And I want the last one without any letters in the number (not an
alpha/beta). I have something like this:
$files = join " ", <file*>;
while ( m|(file_\d+(\.\d+)\b)|g ) { $thefile = $1; }
... which seems to work (correctly returns file_3.1.1), but I'm not sure how
the nested parenthesis are supposed to be referenced. How would I get what
was matched by the inner set? Is this the best way to do this?
2. How do I set off a new process, not waiting or caring about any return
values?
$myApp = "/proj/mycoolexecutable";
$myOptions = "-f -n2 file1 file2";
# execute $myApp." ".$myOptions here, and do not wait for any return values
Thanks!
- Bryan
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