int real_tcgetattr(int fd, struct termios *termios_p);
int real_tcsetattr(int fd, int optional_actions, const struct termios *termios_p);
int real_system(const char *command);
+// exec* - skipped
+int real_execve(const char *filename, char *const argv[], char *const envp[]);
+int real_chdir(const char *path);
#define open real_open
#define fopen real_fopen
#define tcgetattr real_tcgetattr
#define tcsetattr real_tcsetattr
#define system real_system
+#define execl real_execl
+#define execlp real_execlp
+#define execle real_execle
+#define execv real_execv
+#define execvp real_execvp
+#define execve real_execve
+#define chdir real_chdir