fix spawn commands

configure.ac

@@ -74,6 +74,13 @@ fi
 AC_SUBST(RESIZE2FS)
 AC_DEFINE_UNQUOTED([RESIZEFS_PATH], ["$RESIZE2FS"], [Path to resize2fs binary])
 
+AC_PATH_PROG([SHELL], [sh], [no], [$PATH:/sbin:/usr/sbin])
+if test x"$SHELL" == x"no" ; then
+   AC_MSG_ERROR([Please install sh.])
+fi
+AC_SUBST(SHELL)
+AC_DEFINE_UNQUOTED([SHELL_PATH], ["$SHELL"], [Path to sh binary])
+
 AC_PATH_PROG([HOSTNAMECTL], [hostnamectl], [no], [$PATH:/sbin:/usr/sbin])
 if test x"$HOSTNAMECTL" == x"no" ; then
    AC_MSG_ERROR([Please install hostnamectl.])

src/lib.c

@@ -75,26 +75,31 @@ bool exec_task(const gchar* command_line) {
 	GError* error = NULL;
 	gint exit_status = 0;
 	gboolean result;
+	GString* command;
+	command = g_string_new("");
+	g_string_printf(command, SHELL_PATH " -c '%s'", (char*)command_line );
 
-	LOG(MOD "Executing: %s\n", command_line);
-	result = g_spawn_command_line_sync(command_line,
+	LOG(MOD "Executing: %s\n", command->str);
+	result = g_spawn_command_line_sync(command->str,
 		&standard_output,
 		&standard_error,
 		&exit_status,
 		&error);
 
+	g_string_free(command, true);
+
 	if (!result || exit_status != 0) {
 		LOG(MOD "Command failed\n");
 		if (error) {
 			LOG(MOD "Error: %s\n", (char*)error->message);
 		}
 		if (standard_error) {
-			LOG(MOD "STD Error: %s", (char*)standard_error);
+			LOG(MOD "STD Error: %s\n", (char*)standard_error);
 		}
 	}
 
 	if (standard_output) {
-		LOG(MOD "STD output: %s", (char*)standard_output);
+		LOG(MOD "STD output: %s\n", (char*)standard_output);
 		g_free(standard_output);
 	}