Commands and shortcuts in Linux

All Bioinformaticians are aware of the fact that linux is the soul of Bionformatics.

There are few commands and shortcuts in LINUX which we I frequently. So I will be giving you the practical selection of all such commands.

You can put the most frequently commands used into your favorites <genome or KDE> by just a right click. You can run all the commands using command line. The programs which need GUI can be run by using the terminal under GUI.


<> – it is the function key on your keyboard. For instance: <Alt> indicates the “alt” key on your keyboard.
Italic – variable or the file name that you wish to substitute.
Fixed width – Linux filenames and commands


  1. For instance: NETSCAPE, Netscape & nEtscape are three types of different commands. In the same way my_filE, my FILE &my_file are three unlike commands. The user name or the login name that you use and your password both are the same way case sensitive.
  2. Your file name should not contain more than 256 characters and use of variables, digits and letters can be made. Also characters like “.”{dot}, under score {_},{-}are some of the characters which are non recommended.
  3. If your files are beginning with {.}dot character than they will not be shown by sirect or list commands. All these files are hidden files and to view them you will have to open list {ls} to view all these files.
  4. {\} – is the root directory through which all other characters or directories emerge out. It is same as DOS.
  5. Unlike DOS all the directories emerge beneath one directory tree.
  6. # is used before every line in case of configuration files.

Essential LINUX commands & Shortcuts:

  •  (Ctrl)(Alt)(F1): Several terminals can be viewed at the same time in Linux. The above mentioned shortcut will allow you to move to the 1st text terminal.
  • (Ctrl)(Alt)(Fn)( n = 1,2,3,….6): Similarly, you can move on to any terminal directly using this shortcut.
  • ( tty): This command will give you the name of the particular terminal in which you are writing this command.
  • (Ctrl)(Alt)(F7): Will take you to the GUI 1st terminal.
  • (Ctrl)(Alt)(Fn): The command allows you to switch to any terminal between 7-12 where n=( 7,8,9,…..  12). By default No GUI terminal runs on n=8 – 12 so you can use or run other server.

Hope all fellow budding bioinformaticians find this post useful!

Image Source:

About Brij

Bhrat Brij is a SEO expert, Internet Marketer, Affiliate Marketer and Bioinformatician. My short bio or have a look on my Google Profile


  1. Keep up the awesome work. You are very talented & I only wish I could write as good as you do :)

  2. I think I got what I was looking for. I could not get the shortcut command for multiple windows and got it here.

  3. Good writing here I really really like the way you write your blogs.

Speak Your Mind