text: #include "ush.h"
  
  int mx_print_env_error(char option, char *err_arg, int error) {
      if (error == 2)
          fprintf(stderr, "env: unsetenv %s: Invalid argument\n", err_arg);
      else {
          if (error == 0)
              fprintf(stderr, "env: illegal option -- %c\n", option);
          if (error == 1)
              fprintf(stderr,
                      "env: option requires an argument -- %c\n", option);
          fprintf(stderr,
                  "usage: env [-i] [-P utilpath] [-u name]\n");
          fprintf(stderr,
                  "           [name=value ...] [utility [argument ...]]\n");
      }
      return 1;
  }
  