still more files
diff --git a/src/libthread/tsignal.c b/src/libthread/tsignal.c
new file mode 100644
index 0000000..9c64c46
--- /dev/null
+++ b/src/libthread/tsignal.c
@@ -0,0 +1,43 @@
+#include <u.h>
+#include <libc.h>
+#include <thread.h>
+
+extern int _threaddebuglevel;
+
+void
+usage(void)
+{
+ fprint(2, "usage: tsignal [-[ednf] note]*\n");
+ threadexitsall("usage");
+}
+
+void
+threadmain(int argc, char **argv)
+{
+ Channel *c;
+ char *msg;
+
+ ARGBEGIN{
+ case 'D':
+ _threaddebuglevel = ~0;
+ break;
+ default:
+ usage();
+ case 'e':
+ notifyenable(EARGF(usage()));
+ break;
+ case 'd':
+ notifydisable(EARGF(usage()));
+ break;
+ case 'n':
+ notifyon(EARGF(usage()));
+ break;
+ case 'f':
+ notifyoff(EARGF(usage()));
+ break;
+ }ARGEND
+
+ c = threadnotechan();
+ while((msg = recvp(c)) != nil)
+ print("note: %s\n", msg);
+}
