add publish_test.sh tools in mqttd

guowenxue

2019-06-26 1d2b49e4c8d6a3c93973772e661900dfff8c6102

 apue/1.File_IO/ds18b20.c

@@ -116,5 +116,7 @@
    /* convert string value to float value */
    *temp = atof(ptr)/1000;
   
    close(fd);

    return 0;
}