Skip to Content
Linux Shell Scripting Essentials
book

Linux Shell Scripting Essentials

by Sinny Kumari
November 2015
Beginner
282 pages
5h 5m
English
Packt Publishing
Content preview from Linux Shell Scripting Essentials

Sorting and finding unique text

Shell provides different ways to sort the input text using the sort command. It's also possible to remove repeated lines from sorted/unsorted input text using the uniq command. The input text to sort and uniq commands can be given from a file, or redirected from another command.

Sorting an input text

The lines in the input text are sorted in the following order:

  • Numbers from 0 to 9
  • Uppercase letters from A to Z
  • Lowercase letters from a to z

The syntax will be as follows:

sort [OPTION] [FILE …]

Single or multiple input files can be provided to sort for sorting.

The sort command takes multiple options to provide flexibility in sorting. The popular and important OPTION to sort have been discussed in the following table:

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Learning Linux Shell Scripting

Learning Linux Shell Scripting

Ganesh Sanjiv Naik

Publisher Resources

ISBN: 9781785284441