The A-Z of Programming Languages: AWK

Alfred V. Aho of AWK fame talks about the history and continuing popularity of his pattern matching language.

Computer scientist and compiler expert Alfred V. Aho is a man at the forefront of computer science research. He has been involved in the development of programming languages from his days working as the vice president of the Computing Sciences Research Center at Bell Labs to his current position as Lawrence Gussman Professor in the Computer Science Department at Columbia University.

As well as co-authoring the 'Dragon' book series; Aho was one of the three developers of the AWK pattern matching language in the mid-1970's, along with Brian Kernighan and Peter Weinberger.

Computerworld recently spoke to Professor Aho to learn more about the development of AWK, in the first of a series of investigations into the most widely-used programming languages.

How did the idea/concept of the AWK language develop and come into practice?

As with a number of languages, it was born from the necessity to meet a need. As a researcher at Bell Labs in the early 1970s, I found myself keeping track of budgets, and keeping track of editorial correspondence. I was also teaching at a nearby university at the time, so I had to keep track of student grades as well.

I wanted to have a simple little language in which I could write one- or two-line programs to do these tasks. Brian Kernighan, a researcher next door to me at the Labs, also wanted to create a similar language. We had daily conversations which culminated in a desire to create a pattern-matching language suitable for simple data-processing tasks.

We were heavily influenced by GREP, a popular string-matching utility on UNIX, which had been created in our research center. GREP would search a file of text looking for lines matching a pattern consisting of a limited form of regular expressions, and then print all lines in the file that matched that regular expression.

We thought that we'd like to generalize the class of patterns to deal with numbers as well as strings. We also thought that we'd like to have more computational capability than just printing the line that matched the pattern.

So out of this grew AWK, a language based on the principle of pattern-action processing. It was built to do simple data processing: the ordinary data processing that we routinely did on a day-to-day basis.. We just wanted to have a very simple scripting language that would allow us, and people who weren't very computer savvy, to be able to write throw-away programs for routine data processing.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags a-z of programming languages

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Naomi Hamilton

Computerworld
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?