diff --git a/libifupdown/execute.c b/libifupdown/execute.c
index 563fa4c..04d29e6 100644
--- a/libifupdown/execute.c
+++ b/libifupdown/execute.c
@@ -29,7 +29,7 @@
 #define SHELL	"/bin/sh"
 
 bool
-lif_execute_fmt(char *const envp[], const char *fmt, ...)
+lif_execute_fmt(const struct lif_execute_opts *opts, char *const envp[], const char *fmt, ...)
 {
 	char cmdbuf[4096];
 	va_list va;
@@ -41,6 +41,12 @@ lif_execute_fmt(char *const envp[], const char *fmt, ...)
 	pid_t child;
 	char *argv[] = { SHELL, "-c", cmdbuf, NULL };
 
+	if (opts->verbose)
+		puts(cmdbuf);
+
+	if (opts->mock)
+		return true;
+
 	if (posix_spawn(&child, SHELL, NULL, NULL, argv, envp) != 0)
 	{
 		fprintf(stderr, "execute '%s': %s\n", cmdbuf, strerror(errno));
diff --git a/libifupdown/execute.h b/libifupdown/execute.h
index 1a01248..b1f2eb5 100644
--- a/libifupdown/execute.h
+++ b/libifupdown/execute.h
@@ -19,6 +19,11 @@
 #include <stdarg.h>
 #include <stdbool.h>
 
-extern bool lif_execute_fmt(char *const envp[], const char *fmt, ...);
+struct lif_execute_opts {
+	bool verbose;
+	bool mock;
+};
+
+extern bool lif_execute_fmt(const struct lif_execute_opts *opts, char *const envp[], const char *fmt, ...);
 
 #endif