option -f and -i are exclusive

all flag variables initialized with zero
respond `Y' is equal to `y'
update usage string
prompt only if source exist

ignore -i option if file descriptor stdin not refers to a valid
terminal type device

1 files changed, 16 insertions, 5 deletions

diff --git a/bin/mv/mv.c b/bin/mv/mv.c
index 91217d3..0a3d35e 100644
--- a/bin/mv/mv.c
+++ b/bin/mv/mv.c
@@ -33,7 +33,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: mv.c,v 1.2 1994/09/24 02:56:07 davidg Exp $
+ *	$Id: mv.c,v 1.3 1995/10/07 10:42:48 bde Exp $
  */
 
 #ifndef lint
@@ -79,13 +79,17 @@ main(argc, argv)
 	int ch;
 	char path[MAXPATHLEN + 1];
 
-	while ((ch = getopt(argc, argv, "-if")) != EOF)
+	fflg = iflg = 0;
+
+	while ((ch = getopt(argc, argv, "-if?")) != EOF)
 		switch (ch) {
 		case 'i':
-			iflg = 1;
+			iflg = isatty(STDIN_FILENO);
+			fflg = 0;
 			break;
 		case 'f':
 			fflg = 1;
+			iflg = 0;
 			break;
 		case '-':		/* Undocumented; for compatibility. */
 			goto endarg;
@@ -152,6 +156,13 @@ do_move(from, to)
 	 * make sure the user wants to clobber it.
 	 */
 	if (!fflg && !access(to, F_OK)) {
+
+		/* prompt only if source exist */
+	        if (lstat(from, &sb) == -1) {
+		    warn("%s", from);
+		    return (1);
+		}
+		    
 		ask = 0;
 		if (iflg) {
 			(void)fprintf(stderr, "overwrite %s? ", to);
@@ -167,7 +178,7 @@ do_move(from, to)
 		if (ask) {
 			if ((ch = getchar()) != EOF && ch != '\n')
 				while (getchar() != '\n');
-			if (ch != 'y')
+			if (ch != 'y' && ch != 'Y')
 				return (0);
 		}
 	}
@@ -303,6 +314,6 @@ void
 usage()
 {
 	(void)fprintf(stderr,
-"usage: mv [-if] src target;\n   or: mv [-if] src1 ... srcN directory\n");
+"usage: mv [-if] src target;\n   or: mv [-i | -f] src1 ... srcN directory\n");
 	exit(1);
 }