diff -Nur aliases2cdbm-1.0.org/aliases2cdbm.c aliases2cdbm-1.0/aliases2cdbm.c
--- aliases2cdbm-1.0.org/aliases2cdbm.c	Sat Feb 13 10:56:11 1999
+++ aliases2cdbm-1.0/aliases2cdbm.c	Fri Oct 26 11:36:53 2001
@@ -40,6 +40,7 @@
 "  Usage: %s [<filename> [<filename>...]]\n"
 "         %s {-h|--help}\n"
 "         %s {-V|--version}\n"
+"         %s {-l|--tolower}\n"
 "\n"
 "  Input:\n"
 "      One or more text files in `/etc/aliases' syntax.\n"
@@ -59,6 +60,8 @@
 "\n"
 ;
 
+static int istolower;
+
 void version(void)
 {
    printf(version_info, VERSION);
@@ -66,7 +69,7 @@
 
 void usage(void)
 {
-   printf(usage_info, prog_name, prog_name, prog_name);
+   printf(usage_info, prog_name, prog_name, prog_name, prog_name);
    exit(1);
 }
 
@@ -352,13 +355,21 @@
 	    }
 	   if (!in_val)
 	    {
-	       val_len = trim_trailing_space(&val, &val_index, 1);
+	       int i;
+               val_len = trim_trailing_space(&val, &val_index, 1);
 	       if ((NULL == val) || (0 >= val_len))
 		{
 		   error_count++;
 		   error_empty_value(filename, (line_count - 1), key);
 		   continue;
 		}
+	       for(i=0; i<key_len && istolower==1; i++)
+	       {
+	       	if(isalpha(key[i]))
+		{
+			key[i]=tolower(key[i]);
+		}
+	       }
 	       print_alias(outfile, key, key_len, val, val_len);
 	    }
 	}
@@ -441,6 +452,7 @@
 {
    int i;
    
+   istolower=0;
    for (i = 1; i < argc; i++)
     {
        if ('-' != argv[i][0])
@@ -461,6 +473,12 @@
 	   version();
 	   exit(1);
 	}
+       else if ((0 == strcmp(argv[i], "-l")) ||
+    		(0 == strcmp(argv[i], "-tolower")) ||
+		(0 == strcmp(argv[i], "--tolower")))
+	{
+	    istolower=1;
+	}
        else if (0 == strcmp(argv[i], "-"))
 	{
 	   /* '-' is a filename meaning stdin;