Linux

SSH - Too Many Authentication Failures

There are a handful of possible reasons for this error. Perhaps the problem is exactly what is says; you have tried and failed to log in too many times. Maybe your ssh configuration on the server side doesn't allow you to log in at all. Or, you could be bl

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Cloning a KVM Virtual Machine Image

I often need to test on servers set up in a very precise way. I may need to test an application running on an Ubuntu server with Apache and a specific version of php. Or, I may need to test an application or site on a LEMP stack running on CentOS.

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Understanding SSH Key Types

There are several encryption key formats available for ssh. Here I am covering DSA, RSA, ECDSA, and Ed25519. These are the most common. DSA and RSA use factoring of 2 large prime numbers in their encryption algorithm. ECDSA and Ed25519 use elliptical curves.

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Update Your Server Host Keys

If you maintain a VPS, hopefully you are aware of the continuous attack attempts. As one measure to keep your server secure you should periodically change your server's host keys. If your server has been compromised, you definitely want to change your keys

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Putting Applications in your Desktop Menu

Menus

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Command Line Weather

If you live in the command line, like I do, anything that keeps you from having to leave it is a good thing. I am not a weather junkie. But, I often want to know if it is going to rain during my commute, or if I am going to be able to enjoy the outdoors when I

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How to Add a Samba User From the Command Line

Adding Samba users is likely a task that you have to do irregularly. Here is a simple set of instructions that I hope can be a resource. Entries inside <> should be replaced, without the <>, with your entries. Entries inside [] are optional. 

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