Eloquent Agrega IS NULL en la Consulta / Eloquent adds IS NULL on Query

https://github.com/laravel/framework/issues/1591

Clonar Base de Datos Postgres/ Cloning Postgres Database

/* KILL ALL EXISTING CONNECTION FROM ORIGINAL DB (sourcedb)*/
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity 
WHERE pg_stat_activity.datname = 'SOURCE_DB' AND pid <> pg_backend_pid();

/* CLONE DATABASE TO NEW ONE(TARGET_DB) */
CREATE DATABASE TARGET_DB WITH TEMPLATE SOURCE_DB OWNER USER_DB;

Switch USB Modem ZTE from USB DISK/FLASH to MODEM

1. Connect modem to Windows machine
2. Connect to modem (COM port) with terminal (PuTTY or other) (115200bps, Data bits: 8, Parity: None, Stop bits: 1, Flow Control: None).
3. Send AT commands:

   AT+ZOPRT=5
   
   AT+ZCDRUN=8

Cambiar el grupo de usuario en *unix en una sola linea

Bueno tenia que cambiar el grupo de los usuarios pero no lo queria hacer uno por uno y encontré esto en stackexchange.

for user in userA userB userC; do sudo usermod -a -G mygroup $user; done

Centos - “locate” command doesn't work / "locate" comando no funciona

To install the locate package, use yum:

$ yum install mlocate

To update it’s "internal database", run following command.

$ updatedb

stackoverflow