Securely Connect to Linux Instances Running in a Private Amazon VPC

Important note: You should enable SSH agent forwarding with caution. When you set up agent forwarding, a socket file is created on the forwarding host, which is the mechanism by which the key can be forwarded to your destination. Another user on the system with the ability to modify files could potentially use this key to … Read more

SD Card Reformat on a Mac Computer

What are you trying to do? Format an SD card in Windows Where does it apply? Mac OS X How to do it Here is a link that shows you how to reformat an SD card (or MicroSD card) on your Mac: The steps are also written out below. Connect the SD card to your … Read more

How to burn .iso to USB drive

CD/DVD drives have gone obsolete and USB drives have become more popular and cheaper now. Thats the reason we prefer to use USB drives instead of CD or DVD to install a new system.  There are many utilities available which can do this. UNetbootin ( is one of them. UNetbootin allows you to create bootable Live USB drives … Read more


You can use SSH to connect to your Raspberry Pi from a Linux computer or Mac (or another Pi) from the Terminal, without installing additional software. You’ll need to know your Pi’s IP address to connect to it. To find this from your Pi’s terminal type hostname -I. Alternatively if you’re running the Pi without … Read more

How to take a screenshot on your Mac

You can take screenshots of your whole screen or just part of it. Screenshots are saved automatically as .png files on your desktop. Take a screenshot of your whole screen Press Command (⌘)-Shift-3. Find the screenshot as a .png file on your desktop. Take a screenshot of part of your screen Press Command-Shift-4. The pointer … Read more