Thursday, April 10, 2014

What is Heartbleed Bug


It is basically a security bug (buffer overread) which is in the Open SSL implementation which is used by a looooooooot of websites on the internet to secure ( :) ) the communication between browser and website.

Jacob on stackexchange explained this issue in detail. Read his answer at superuser.com

Sunday, January 26, 2014

to view only directories in Unix


If you have ever wanted to show a list of subdirectories underneath the current directory while at the terminal prompt, there’s a simple command that can help.
Simply run the following command from the bash terminal prompt, which filters the file listing to only show folders:

ls -l | grep ^d
Since typing that whole command every time you want to show a list of directories might get a little tiring, you can use the alias feature to assign it to something you can more easily remember:
alias lsd="ls -l | grep ^d"
Now when you type “lsd” at the prompt, you will see a list containing only the directories, which can be very useful when you are trying to navigate through a messy set of folders.

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