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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

Calculating and reducing the runtime of a script


In this recipe, we are going to learn how to calculate and reduce the script’s runtime. A simple time command will help in calculating the execution time.

Getting ready

Besides having a terminal open, make sure you have the necessary scripts present in your system.

How to do it...

Now, we will write a simple script that contains a few commands, and then, using the time command, we will get the runtime of that script. Create a script cal_runtime.sh and write the following code in it.

clear
ls -l
date
sudo apt install python3

How it works...

Now, we have written a script cal_runtime.sh and four commands in that script: clear, ls, date, and a python3 installation command. Run your script as follows:

$ time bash cal_runtime.sh

After the execution, you will get the runtime of the script at the bottom of your output.

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