* src/install.c (main): Likewise.
* src/mv.c (main): Likewise.
* src/pwd.c (main): Likewise.
+ * src/tty.c (main): Likewise.
+ * src/chroot.c (main): Likewise.
+ * src/hostname.c: Likewise.
+ * src/du.c (main): Likewise.
+ * src/expand.c (main): Likewise.
+ * src/sync.c (main): Handle argc == 0.
+ * src/expr.c (main): Likewise.
+ * src/printf.c (main): Likewise.
* src/ln.c (main): Test for `missing argument' before computing n_files.
* src/tail.c (main): Test for the case of no arguments before
computing n_files.
+ * src/kill.c (send_signals): Don't check command line arguments here.
+ (main): Check them here instead. Handle argc < optind.
+
* src/logname.c (main): Use error, rather than fprintf, for the sake
of consistency.