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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

By : Donald A. Tevault
4.9 (8)
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The Ultimate Linux Shell Scripting Guide

The Ultimate Linux Shell Scripting Guide

4.9 (8)
By: Donald A. Tevault

Overview of this book

Dive into the world of Linux shell scripting with this hands-on guide. If you’re comfortable using the command line on Unix or Linux but haven’t fully explored Bash, this book is for you. It’s designed for programmers familiar with languages like Python, JavaScript, or PHP who want to make the most of shell scripting. This isn’t just another theory-heavy book—you’ll learn by doing. Each chapter builds on the last, taking you from shell basics to writing practical scripts that solve real-world problems. With nearly a hundred interactive labs, you’ll gain hands-on experience in automation, system administration, and troubleshooting. While Bash is the primary focus, you'll also get a look at Z Shell and PowerShell, expanding your skills and adaptability. From mastering command redirection and pipelines to writing scripts that work across different Unix-like systems, this book equips you for real-world Linux challenges. By the end, you'll be equipped to write efficient shell scripts that streamline your workflow and improve system automation.
Table of Contents (26 chapters)
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24
Other Books You May Enjoy
25
Index

Using paste

Instead of joining two or more files together end-to-end as cat does, paste joins them together side-by-side. This is handy when you have two or more files of columnar data, and you want to look at all of the data in one display. Go ahead and create the two text files that you see in the following diagram Then try out the paste command that you see in the diagram.

Figure 6.5: Pasting two files together with paste

There are two options that you can use with paste. The serial option, set with the -s switch, allows you to view the columns of data horizontally. Pasting the myfile_1.txt and myfile_2.txt with the -s option looks like this:

[donnie@fedora ~]$ paste -s myfile_1.txt myfile_2.txt
one	three	five	seven	nine
two	four	six	eight	ten
[donnie@fedora ~]$

The delimiter option, set by the -d switch, allows you to change how the columns are separated. If you leave out the -d switch, the columns of the pasted display will be separated by tabs, as you see...

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The Ultimate Linux Shell Scripting Guide
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