Error handling is a pain, and it's easy to get by for a long time in Node.js without dealing with many errors correctly. But building robust Node.js apps requires dealing properly with errors, and it's not hard to learn how.

joyent

Create table

CREATE DATABASE `mydb` CHARACTER SET utf8 COLLATE utf8_general_ci;

Add user Access

GRANT ALL ON `mydb`.* TO `username`@localhost IDENTIFIED BY 'password';

Add user Access - FULL CONTROL

GRANT ALL PRIVILEGES ON *.* TO 'username'@'192.168.%' IDENTIFIED BY 'password' WITH GRANT OPTION;

Flush Privileges

FLUSH PRIVILEGES;

Usage from man wall:

wall [file]

Wall displays the contents of file or, by default, its standard input

simple usage:

$ echo "who's out there" | wall

for bigger text messages:

$ wall << .
who is out there?
.

This would be a "useless use of here documents", because by default the terminal itself will be connected to wall's standard input and wall will start reading from it until it receives an end-of-file character (Ctrl+D):

$ wall
who is out there?
^D

superuser

(sleep 300; echo "80" > /sys/class/leds/blue/brightness) &

stackexchange

7 Handy SQL Scripts for SQL Developers

1. Search for Text Inside All the SQL Procedures
2. Compare Row Counts in Tables From Two Different Databases With the Same Schema
3. Back Up Multiple Databases at Once
4. Shrink Multiple Database Logs at Once
5. Restrict Connection to the Database by Setting Single-User Mode
6. String Function in SQL to Generate Dynamic Texts
7. Printing Table Column Definitions

code.tutsplus