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I thought I'd share my favorite regex of all time. [ -~] Any idea what this regexp matches? Scroll down for the answer. . . . . . . . . It matches all ASCII characters from the space to tilde. What are these characters? These are all printable characters! Take a look at this ASCII table. Printable characters start…
Hi all! I'm starting a new article series here. This one is going to be about Unix utilities that you should know about. The articles will discuss one Unix program at a time. I'll try to write a good introduction to the tool and give as many examples as I can think of. The first post in this series is going to be…
Hi all! I'm starting a new article series here. This one is going to be about Unix utilities that you should know about. The articles will discuss one Unix program at a time. I'll try to write a good introduction to the tool and give as many examples as I can think of. The first post in this series is going to be…
I love working in the shell. Mastery of shell lets you get things done in seconds, rather than minutes or hours, if you chose to write a program instead. In this article I'd like to explain the top one-liners from the commandlinefu.com. It's a user-driven website where people get to choose the best and most useful...
Here's something you didn't know about bash functions. Usually when you write a function you do this: function name () { ... } Right? I know you do, because that's how everyone writes functions. Well, here's the thing. In bash { ... } doesn't mean "function's body" or "function's scope" as in JavaScript or C. It's...
This is the third post in the article series about Unix and Linux utilities that you should know about. In this post I will take you through the useful lsof tool. If netcat was called the Swiss Army Knife of Network Connections, then I'd call lsof the Swiss Army Knife of Unix debugging. Lsof follows Unix philosophy...
This is the second post in the article series about Unix utilities that you should know about. In this post I will introduce you to the netcat tool or simply nc. Netcat is often referred to as a Swiss Army knife utility, and for a good reason. Just like the multi-function usefulness of the venerable Swiss Army…
This is the fifth part of the Bash One-Liners Explained article series. In this part I'll teach you how to quickly navigate around the command line in bash using emacs-style keyboard shortcuts. That's right, emacs-style keyboard shortcuts. It might surprise you but by default bash uses emacs-style keyboard shortcuts...
sed book This is the world's best introduction to sed - the superman of UNIX stream editing. Originally I wrote this introduction for my second e-book, however later I decided to make it a part of the free e-book preview and republish it here as this article. Introduction to sed Mastering sed can be reduced to...
Testling now has moved to Testling-CI Don't use anything described below as it doesn't work anymore All questions about Testling-CI: feedback@browserling.com We have amazing news at Browserling. We just launched a new product called Testling! Testling is automated cross-browser JavaScript testing tool. You write the...
I was just watching a friend of mine work with git, and he'd always type all the git commands in full, like git status and git push. I realized that he must not be the only one to do so, so I decided to write this quick blog post and encourage everyone to create Huffman coded aliases for the most commonly used...
Buy it now for just $19.99 Hello everyone! I have awesome news – I just wrote my first e-book ever. It's called Awk One-Liners Explained and it's based on the Awk One-Liners Explained article series that I wrote here on my blog a few years ago and that has been read over 2,000,000 times. I went through all the...
Hi all. I am starting a new article series called Vim Plugins You Should Know About. As the title suggests, this series is going to be about Vim plugins that you should know about and be using. The first article in this series will be about one of my favorite plugins called surround.vim. So what is surround.vim plugin?
Here is something neat that I hacked together – a `top' like Python program called Hacker Top that allows you to follow Hacker News from a UNIX terminal! Hacker News has become the 2nd source for news after programming.reddit for me. I have a couple of ideas for a startup myself and the tips I get from Hacker News...
I have extended my xgoogle library with a Python module for Google Translate. The new module is called "xgoogle.translate" and it implements two classes - "Translator" and "LanguageDetector". The "Translator" class can be used to translate text. It provides a function called "translate" that takes three arguments -...
A part of being a great programmer is having your personal code library. With a personal code library I mean a repository of code that you have an intimate knowledge of and that you can reuse quickly. If you are a C programmer, you don't want to reimplement linked lists, trees, various utility functions, macros and...
I was reading about vim the other day and found out why it used `hjkl` keys as arrow keys. When Bill Joy created the vi text editor he used the ADM-3A terminal, which had the arrows on hjkl keys. Naturally he reused the same keys and the rest is history. Here is how the `hjkl` keys looked. ADM-3A keyboard's hjkl…
This is the fourth post in the article series "Vim Plugins You Should Know About". This time I am going to introduce you to a plugin called "snipmate.vim". If you are intrigued by this topic, I suggest that you subscribe to my posts! For the introduction and first post in this article series, follow this link - Vim...