ZHAO, BING wrote: > Hi, > first, I want to thank all who viewed my first question days > before, especially to those who took time to answer it. It was > trenmendous encouragement for a beginner perlee like me. Thanks again. > My question: > Is there a way to call or maybe get the # of files in a > directory? > I am trying to build a storage directory for files which > automatically empits itself when the # files reaches 50. If there is > some commands which do that(like whatever COMMAND(directory) ), the > problem would be solved, I then will be OK to program the rest of perl. > To be more specific, I have a CGI online page which takes > uploaded files(press 'upload' on my website, then upload whatever text > files, uaually DNA sequence files) then I need to modify the files a bit > then save the files to the STORAGE directory, the directory can't be > infinitely increasing, so I need to empty it when the time comes. And I > need to keep track of the # of files in that 'damn' directory. > Maybe you got better idea about how to store the files to > the directory? Let me know then. >
perldoc -f opendir perldoc -f readdir perldoc -f closedir perldoc -f unlink This should get you started. You can also look into file globs though I have never preferred them, for whatever reason. perldoc -f stat perldoc -f sort Might also come in handy as presumably you want to remove the oldest, highest number, etc. -- UNTESTED -- opendir my $DIRHANDLE, '/path/to/dir' or die "Can't get directory handle: $!"; my @filelist = grep { $_ ne '.' and $_ ne '..' } readdir $DIRHANDLE; closedir $DIRHANDLE; if (@filelist > 50) { for my $index (50 .. @filelist) { unlink $filelist[$index] or die "Can't remove file $filelist[$index]: $!"; } } > Thank you all for reading my 'junk'. > HTH, http://danconia.org > best, > > Bing > -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>