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Rake Task Management Essentials

Rake Task Management Essentials

By : Andrey Koleshko
5 (4)
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Rake Task Management Essentials

Rake Task Management Essentials

5 (4)
By: Andrey Koleshko
Buy this Book

Overview of this book

Table of Contents (18 chapters)
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Rake Task Management Essentials
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Rake Task Management Essentials
Credits
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Credits
About the Author
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About the Author
Acknowledgements
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Acknowledgements
About the Reviewers
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About the Reviewers
www.PacktPub.com
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www.PacktPub.com
Preface
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Preface
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1
The Software Task Management Tool – Rake
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The Software Task Management Tool – Rake
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Installing Rake
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Introducing rake tasks
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The command-line arguments
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Using global Rakefiles to run tasks anywhere
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Defining custom rake tasks
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Task dependencies – prerequisites
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The structure of a Rake project
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The code conventions of Rake
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Summary
2
Working with Files
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Working with Files
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Using file tasks to work with files
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The characteristics of the file task dependencies
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Creating a folder with the directory method
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Using Rake's file utilities
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A practical example of automatically generating a config file
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Summary
3
Working with Rules
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Working with Rules
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Understanding the duplication of the file tasks
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Using a rule to get rid of the duplicated file tasks
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Detecting a source for the rule dynamically
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Using a regular expression to match more tasks
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Summary
4
Cleaning Up a Build
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Cleaning Up a Build
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Setting up a project
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The cleaning tasks
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Summary
5
Running Tasks in Parallel
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Running Tasks in Parallel
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Defining tasks with parallel prerequisites
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Thread safety of multitasks
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Multiple task definitions with a common prerequisite
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Applying multitasks in practice
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Summary
6
Debugging Rake Tasks
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Debugging Rake Tasks
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Using command-line arguments for debugging
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Getting a dependency's resolution with --prereqs
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Using the --rules option to trace the rule resolution
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Using the Ruby approach to debug a Rake project
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Summary
7
Integration with Rails
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Integration with Rails
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Introducing Rake's integration with Rails
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Custom rake tasks in a Rails project
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Recurrent running of tasks
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Summary
8
Testing Rake Tasks
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Testing Rake Tasks
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The need for tests
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Writing tests for rake tasks
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Summary
9
Continuous Integration
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Continuous Integration
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Introducing Jenkins
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Setting up Jenkins
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Configuring Jenkins to run rake tasks
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Summary
10
Relentless Automation
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Relentless Automation
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Examples of Rake being used by famous gems
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Other examples of Sinatra using Rake
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Thor – the next generation of Rake
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Summary
1
Index
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Index

Recurrent running of tasks

By now, everything is fine and there is nothing to disturb us; we have solved our issue, it's ready to use, and we can run it manually tomorrow, after tomorrow, and on any day in the future, or we can forgot about it completely. It would be great to run this task automatically each day or every week or even hourly. The main problem is how to run this task on the schedule. In Unix-like systems, there is a utility that enables these type of tasks—cron.

Note

To learn more about cron, use the man cron command on the Unix-like operating system; there is an excellent blog post about it at http://goo.gl/XZ4GrC. For people who use Windows, there is an analogue program at http://cronw.sourceforge.net. There is also a program included in Windows and you don't even have to install third-party tools for this at all. This tool is called Task Scheduler (http://en.wikipedia.org/wiki/Task_Scheduler).

We are not going to dive into the depth of cron now, but you need to know some basic...

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