Looking Glass’s are perfect to troubleshoot network issues. Those can generate ping, traceroute, mtr reports from the server to the host that you wish. Most popular example is Hurricane Electric’s looking glass http://lg.he.net/
Kali Linux is the newly born project from “offensive security” who achieved fame with the infamous BackTrack linux security distro. Kali linux is free and includes more than 100 of security penetration and audit tools. If you have ever used Backtrack you may might be wondering whats different here on Kali well its a complete operating system unlike backtrack which is a live CD based operating system.
If you work in front of the computer quite a lot, You might have eye strain issues. On Laptops this is not a big issue because those have the ability to dim the light considerably. But in my case I use a desktop for work and monitors doesn’t have the ability to dim extensively like laptops. Even at lowest brightness, the whites are too bright for me.
I’m using Ubuntu and there is this app called “redshift” to adjust the color temperature and lets see how you can get it running.
Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early morning, the color temperature transitions smoothly from night to daytime temperature to allow your eyes to slowly adapt.
Lets add the PPA
MTR its a well known network diagnostic tool which you can use to troubleshoot connectivity problems on your network or servers. As the official web site for MTR says
mtr combines the functionality of the ‘traceroute’ and ‘ping’ programs in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and a user-specified destination host. After it determines the address of each network hop between the machines, it sends a sequence ICMP ECHO requests to each one to determine the quality of the link to each machine. As it does this, it prints running statistics about each machine.
Evernote is my favorite note taking application which I use everyday to keep in track of my work and even these blog posts. Whenever I get an idea I jot down it on my Evernote app on my Android, Mac or Evernote web page on my Ubuntu PC. If you are frequent reader of this blog you might know that I work on Ubuntu on my main PC and there isn’t an Evernote official app for Ubuntu. But there is “Everpad” which is a nice solution and it just works. It syncs your notes from evernote and its secure and simple. In this guide I will explain how you can install Everpad on Ubuntu and add Evernote to it.
Are you working on Arduino on your Ubuntu environment? If you are using it for the first time you might get face a problem that, Ubuntu doesn’t detect your Arduino board and you cant select the serial port by going to Tools -> serial Port because serial port is grayed out.
Fixing this is easy. This happens because Ubuntu doesn’t give root permissions to the Arduino IDE by default so it cant access the serial connections.
Easiest way is opening up terminal and type in
Ever heard about Ksplice? Its a great addon to install Linux kernel updates and patches without rebooting the system. Ksplice is a gem for people who run servers because they can install critical updates without rebooting the host. Well if you are used to run latest kernels from the sources, thanks to recent security issues and rapid updates of linux kernel you will need lot of reboots if not for a thing like ksplice. Unfortunately ksplice is purchased by oracle and now it isn’t free anymore.
However Ksplice is still free for use on Ubuntu desktop. Well you might ask why a desktop user might want to go re-bootless on a desktop or laptop. Well just because we can Or you might find many other uses such as file servers or maybe even web servers running on Ubuntu desktop version.
Skype is great I use it everyday, and there is Skype premium which is greater but comes at a cost. If you have relatives,friends or some special one that you wanna talk to, on those Skype premium supported countries, there wont be anything that will beat Skype’s pricing for landline and mobile calls. Skype premium is not only about free calls, it also enables group video calls and group screen sharing features.