Understanding Variables in Shell Scripting

A number of beautiful and powerful programming languages, like Python, Ruby, and Perl are available for scripting needs. Even then you may find the old school unix shell scripting very useful tool to learn and use. For sure, shell scripts looks crazy and hard to read/understand. Once you get a hang of it, you might […]






How to Get a Specific Line or Lines From a Big File? Hint: Use One Liner AWK

If you are working with a huge text file with millions of lines and want to know the content of a specific line, there are a few tricks you can play to get the line you want. ┬áThe naive approach of reading the file line by line (say in python) and keeping a count on […]






Two Most Useful Commands, If You Live On The Linux/MacOS Terminal

Do you use the linux/Mac OS X terminal a lot? If yes, you must have a few most useful commands. The commands that help you move around terminal fast and gives you the super power to look up your history real fast will be handy on every day use. Calling them as the “Most Useful […]






Tips to Get Started with Screen, the Terminal Multiplexer

The more you feel comfortable with terminal, the higher the number of terminals that will be open. For sure you will many things to keep a tab, one for your email, one for the code, one for executing the code, and so on. And one might easily get annoyed, rightly so, recreating your multiple sessions […]






Ten Linux Commands on “tar” and “gzip” You Need to Know

Admit it. Almost every time you deal with a tar” file or “gzip” file, you wonder what was the command that I used last time to “——“. You can fill the blanks with “Creating a new tar file, how to gzip a tar file, how to unzip a file, how to get a peek of […]






How to Install Spotify in Linux?

Spotify, the digital music service, that has made listening to music more social has crossed the Atlantic ocean and landed in US. With Spotify, you dont need to buy songs any more. Instead, for a monthly subscription, the whole world of music is yours to stream to almost any device (Well almost). Needless to say […]






How to Download a File or Directory Using wget?

If you are spending too much time on a terminal, there is a good chance that you would like to download a file or a directory from the web, but without really using a browser. You can use the command line utility “wget” to download a file or a directory right from your terminal. The […]






How to Find the List of Directories in a Directory in Linux/Mac OS X?

Anyone who has used command line on a terminal must used the linux command “ls” to list the files and directories in a directory. Simple use “ls” command will list directory and files in a given directory. Often you might want to know only about the directories in a directory. One can use the command […]






How to Count the Number of lines, Words, and, Characters in a Text File from Terminal?

The most easiest way to count the number of lines, words,a nad characters in text file is to use the command “wc” in terminal. The command “wc” basically means “word count” and with different optional parameters one can use it to count the number of lines, words, and characters in a text file. To count […]






How to Find Big Files that Takes up Space in Your Computer?

One of the advantages in having bigger harddrives is that we hardly worry about the available space. However, there comes a time, you want to clean up files and want to free up space really quick. One way to do that is to find the biggest files and remove them if they are no longer […]