diff -r 23160db926d4 -r 86d6f7fdeb7e exigrey.pl
--- a/exigrey.pl	Wed Mar 18 14:50:22 2015 +0000
+++ b/exigrey.pl	Tue May 24 16:32:18 2016 +0200
@@ -7,6 +7,7 @@
 use constant USAGE => <<'#';
 
 Usage: !ME! --insert item [delay [db]]	# insert an item
+       !ME! --remove item               # remove an item
        !ME! --list [db]			# list all items
        !ME! --stat [db* ...]		# print short statistic
        !ME! --clean [days [db* ...]]	# remove items not used since <days> days
@@ -43,6 +44,7 @@
 my $opt_clean;
 my $opt_purge;
 my $opt_dbs;
+my $opt_remove;
 
 sub getDBs(@);
 sub iterate(\%$);
@@ -52,6 +54,7 @@
     GetOptions(
         "list!"   => \$opt_list,
         "insert!" => \$opt_insert,
+	"remove!" => \$opt_remove,
         "stats!"  => \$opt_stats,
         "clean!"  => \$opt_clean,
         "purge!"  => \$opt_purge,
@@ -161,10 +164,29 @@
         print unseen(@ARGV);
         exit 0;
     }
+
+    if ($opt_remove) {
+	my %default = getDefault();
+	my $item = shift;
+	my $db = shift // $default{db};
+
+	my $key = "$item\0";
+
+	connectDB(\my %h, $db);
+	if (not exists $h{$key}) {
+	    warn "$0: not found\n";
+	}
+	else {
+	    $_ = delete $h{$key};
+	    s/\0$/\n/;
+	    print;
+	}
+	exit 0;
+    }
 }
 
 sub getDBs(@) {
-    grep { -f }
+    grep { !/\.lock$/ } grep { -f -s }
       map { m(^\.?/) ? glob($_) : glob(getDBDir() . "/$_") } @_ ? @_ : "*";
 }