Found close3onwards.c on jura.

diff --git a/misc/close3onwards.c b/misc/close3onwards.c
new file mode 100644 (file)
index 0000000..9788652
--- /dev/null
+++ b/misc/close3onwards.c
@@ -0,0 +1,7 @@
+#include <stdlib.h>
+int main(int ac, char **av) {
+  int i;
+  for (i=3; i<32; i++) close(i);
+  execvp(av[1],av+1);
+  perror(av[1]);
+}