text: #ifndef ERROR_H_98B80DA6_853B_4914_9B0A_EF41D19BB57A
  #define ERROR_H_98B80DA6_853B_4914_9B0A_EF41D19BB57A
  
  // Error codes
  #define CREATE_PROCESS_FAILED -1
  #define BUILT_IN_CD_HOME_FAILED -2
  #define BUILT_IN_CD_NEW_FAILED -3
  
  extern char *pname;
  
  void err_ret(const char *fmt, ...);
  void err_sys(const char *fmt, ...);
  void err_dump(const char *fmt, ...);
  void err_msg(const char *fmt, ...);
  void err_quit(const char *fmt, ...);
  
  #endif // ERROR_H_98B80DA6_853B_4914_9B0A_EF41D19BB57A