Monthly Archives: April 2015

How to connect to a remote Oracle database

Here is how to connect to a remote Oracle database using SQLPlus: sqlplus user/pass@(DESCRIPTION=(ADDRESS=(PROTOCOL=protocol)(HOST=host)(PORT=port))(CONNECT_DATA=(SID=sid))) Please note that the words in Italics represent variables: user – user name for the remote database pass – password for the remote database protocol – protocol used to connect to remote database, usually TCP host – IP address or hostname of the […]

How to change IP address on CentOS Linux

A few weeks back I needed to change my IP address on a Linux CentOS installed in a VirtualBox machine. Here is how to do it: ifconfig eth0 ifconfig eth0 netmask Sources:

How to get your MAC address in Windows 7

I needed to get mine today, the command is very simple and needs to be executed in a cmd window. Here is how to get the MAC address with the name of the adapter. C:\Users\hecperez>getmac -v You will see something like this:

How to make your own spray paint military stencil

I have a few of this steel ammo boxes to store stuff and recently I came up with the idea of labeling them using military-like stencils, I actually had to create them. Here is how to do it. Download a stencil font, for example Boston Traffic Type the text you want in any size you want […]

Tactical photography/adventure backpack

This post has been moved to a new blog, click here: