Index: trunk/include/sh_tools.h
===================================================================
--- trunk/include/sh_tools.h	(revision 196)
+++ trunk/include/sh_tools.h	(revision 197)
@@ -20,4 +20,8 @@
 char * errorExplain (int err_num, char * errbuf, size_t len);
 #endif
+
+/* Returns non-zero if interface exists
+ */
+int sh_tools_iface_is_present(char *str);
 
 /* returns allocated buffer
Index: trunk/include/sh_unix.h
===================================================================
--- trunk/include/sh_unix.h	(revision 196)
+++ trunk/include/sh_unix.h	(revision 197)
@@ -156,4 +156,8 @@
 extern int sh_unix_check_acl;
 
+/* --- run a command, securely --- 
+ */
+int sh_unix_run_command (const char * str);
+
 /* mlock utilities
  */