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Bash Cookbook

You're reading from  Bash Cookbook

Product type Book
Published in Jul 2018
Publisher Packt
ISBN-13 9781788629362
Pages 264 pages
Edition 1st Edition
Languages
Authors (2):
Ron Brash Ron Brash
Profile icon Ron Brash
Ganesh Sanjiv Naik Ganesh Sanjiv Naik
Profile icon Ganesh Sanjiv Naik
View More author details
Toc

Table of Contents (15) Chapters close

Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
1. Crash Course in Bash 2. Acting Like a Typewriter and File Explorer 3. Understanding and Gaining File System Mastery 4. Making a Script Behave Like a Daemon 5. Scripts for System Administration Tasks 6. Scripts for Power Users 7. Writing Bash to Win and Profit 8. Advanced Scripting Techniques 1. Other Books You May Enjoy Index

Reading delimited data and altered output format


Every day, we open many files in many different formats. However, when thinking about large amounts of data, it is always a good practice to use standard formats. One of these is called Comma Separated Values, or CSVs, and it uses a comma (,) to separate elements or delimit on each row. This is particularly useful when you have large amounts of data or records, and that data will be used in a scripted fashion. For example, in every school semester, Bob, the system administrator, needs to create a series of new users and set their information. Bob also gets a standardized CSV (like in the following snippet) from the people in charge of attendance:

Rbrash,Ron,Brash,01/31/88,+11234567890,rbrash@acme.com,FakePassword9000
...

If Bob the administrator wishes to only read this information into an array and create users, it is relatively trivial for him to parse a CSV and create each record in one single scripted action. This allows Bob to focus his...

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