C example uses the MSG facility now to report in interactive mode.

target/cos_117/examples/helloc/helloc.c

@@ -1,6 +1,8 @@
 #include <stdio.h>
+#include <sys/syslog.h>
 
 int main(void) {
+   syslog("Hello syslog\n", SYSLOG_USER | SYSLOG_SYSTEM, 1, 1);
    puts("Hello COS world!\n");
    return 0;
 }