--- a/once.pl	Fri Dec 25 22:29:55 2015 +0100
+++ b/once.pl	Fri Dec 25 22:31:06 2015 +0100
@@ -65,7 +65,7 @@
 
 die "Environment ONCE_VAR needs to be defined\n"
   if not defined $ENV{ONCE_VAR};
-my $ONCE_VAR = untaint($ENV{ONCE_VAR}, qr((^/.*)));
+my $VAR = untaint($ENV{ONCE_VAR}, qr((^/.*)));
 
 exit main() if not caller;
 
@@ -75,12 +75,12 @@
     # per view (user) we have an own directory
 
     # pre condition checks
-    -d $ONCE_VAR
-      or mkdir $ONCE_VAR => 0777
-      or die "Can't mkdir $ONCE_VAR: $! (your admin should have created it)\n";
+    -d $VAR
+      or mkdir $VAR => 0777
+      or die "Can't mkdir $VAR: $! (your admin should have created it)\n";
 
-    -x -w $ONCE_VAR
-      or die "Can't write to $ONCE_VAR: $!\n";
+    -x -w $VAR
+      or die "Can't write to $VAR: $!\n";
 
     # Download?
     # PATH_INFO is something like
@@ -93,9 +93,9 @@
     {
         #        use Data::Dumper;
         #        die Dumper \%+;
-        my $view  = deslash realpath catfile $ONCE_VAR, $+{view};
-        my $store = deslash realpath catfile $ONCE_VAR, $+{store};
-        my $file  = deslash realpath catfile $ONCE_VAR, $+{path};
+        my $view  = deslash realpath catfile $VAR, $+{view};
+        my $store = deslash realpath catfile $VAR, $+{store};
+        my $file  = deslash realpath catfile $VAR, $+{path};
         my $base  = $+{base};
 
         unless (-f $file) {
@@ -152,15 +152,15 @@
             $d = join '-' => base62(time), base62(rand(10_000));
             $v = 'anonymous';
         }
-        $v, deslash catfile($ONCE_VAR, $d);
+        $v, deslash catfile($VAR, $d);
     };
 
     # Handle the removal request and we're done
     if (param('delete') =~ m{(?<store>(?<view>$rxVIEW)/$rxFILE/?)}) {
 
         # FIXME: sanitization
-        my $store = deslash catfile $ONCE_VAR, $+{store};
-        my $view  = deslash catfile $ONCE_VAR, $+{view};
+        my $store = deslash catfile $VAR, $+{store};
+        my $view  = deslash catfile $VAR, $+{view};
         remove_tree $1 if $store =~ m(^(/.*));
         rmdir $1 if $view =~ m(^(/.*));
         print redirect(-uri => url(-path_info => 1));
@@ -227,7 +227,7 @@
 
             my ($file, $dir) = fileparse($_);
             $dir = substr $dir,
-              length $ONCE_VAR;    # make it relative to $ONCE_VAR
+              length $VAR;    # make it relative to $VAR
 
             # FIXME: use the rx* patterns from above
             $dir =~ m{/(?<expires>[a-z\d]{6})-(?<hash>[a-z\d]+)-(?<delete>.)}i
@@ -269,7 +269,7 @@
 sub deletedir {
     remove_tree
       map  { /^(\/.*)/ }
-      grep { /^\Q$ONCE_VAR\E/ } @_;
+      grep { /^\Q$VAR\E/ } @_;
 }
 
 sub humanize {