awk tutorial

Name: awk tutorial
Rating: 4.4 (100 reviews)

awk programming examples

Created byFrank Anemaet

Last updated 8/2021

English

What you'll learn

The AWK programming language
data mining with awk
text processing with awk
make awk scripts

Course content

1 section • 13 lectures • 32m total length

Introduction2:26
Discover how awk enables data extraction from files, as well as large data processing on Unix-like systems, including Linux and Mac OS X, and how to turn outputs into scripts.
Install awk2:00
Awk is a programming language designed for text processing, with variants such as gawk. Install it via your Linux distribution's package manager, and verify installation with which awk.
Basics4:06
CSV file2:55
Learn how to use awk to process csv files by defining a comma separator with -F. Print specific columns, such as the first or second column, from comma separated values.
CSV note0:03
Select rows3:00
Range1:27
Learn to filter awk data by numeric ranges in the fourth column. Combine conditions, such as greater than 40 and less than 80, to print names with scores.
Make scripts3:53
Write A.W. script programs using any text editor and save with the proper extension. Define begin and end blocks, and print the first and second columns with $1 and $2.
If else3:37
Learn to use if else in awk to filter and display the first column based on a score, printing names and scores and indicating pass or fail.
Variables1:58
Learn how variables let you name and reuse data values, and reference file columns like first name, last name, and class for easier printing.
Loops3:52
Explore awk loops, including for, while, and do while, use a counter variable to repeat code and print results from one to ten.
Commens1:02
Learn how to add comments in awk, including a dollar sign for single-line comments, and that lines with a comment indicator are ignored.
Special variables1:47
explore awk special variables that provide the line number and the number of fields, and learn to print line numbers with content while filtering out empty lines using those variables.

Requirements

Basic Linux knowledge

Description

awk is an incredibly powerful programming language. You can use it to replace sed, grep, cut, sort, uniq (and more) on the command line in most Unix-like operating systems.

awk, a programming language that can be used for text processing.

Awk is a scripting language, so it processes text one line at a time, and doesn’t rely on any underlying commands or libraries to do its work. It operates on text files that you pass to it.

The awk program is a data-mining tool. You can use it to extract particular columns, rows, or fields (known as "tokens") of information out of a file, in much the same way as you can select specific pieces of text out of a line

awk is a standard feature of Unix operating systems (any Linux system or Mac OS X). It is a powerful tool for extracting data from files and text streams, and for performing various kinds of text processing.

The course will teach you how to use the awk programming language. This course will provide a simple overview of the basics, but be aware that there are many more things that awk can do.

If you are a Linux user or a developer or sysadmin that wants to become more skilled, awk is a must known tool.

Who this course is for:

Linux users that want to increase their skills
Data scientists that plan to use Linux
Developers or sysadmins to increase their skills