commit 5372723

add chdir argument flag

 1@@ -6,6 +6,8 @@
 2 #include <stdlib.h>
 3 #include <string.h>
 4 
 5+#include <unistd.h>
 6+
 7 static void
 8 usage(FILE *fp, const char *argv0)
 9 {
10@@ -236,6 +238,9 @@ main(int argc, char **argv)
11 		} else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
12 			usage(stdout, argv[0]);
13 			return 0;
14+		} else if (strcmp(argv[i], "-C")==0) {
15+		  chdir(argv[i+1]);
16+		  ++i;
17 		} else if (argv[i][0] == '-') {
18 			usage(stderr, argv[0]);
19 			return 1;