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Automating Your Daily Tasks with Scripting

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Automating Your Daily Tasks with Scripting Adler Hsieh RubyConf Taiwan 2015-9-11


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Agenda What is Scripting Why Scripting Several Cases Script Management Q & A


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Only Basic Concept


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Who am I Adler Hsieh Software Engineer at OneAD Ruby, JavaScript, PHP Github: adlerhsieh Twitter: @adler_hsieh Blog: http://motion-express.com


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What is Scripting


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Let’s make it simple


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Um…


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Let’s make it a little useful


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How do I get my local ip address?


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> ifconfig


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What is scripting 192.168.1.149 Your local ip address


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What is scripting


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What is scripting Basically… Small programs solving Small problems


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Plus… Saves time Easy to write Easy to manage


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And… Show off


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Cases Cleaning old files Shutdown local server MySQL Database import from .sql


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Cleaning Old Files Scenario All downloaded files are in one directory Directory becomes very large


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Cleaning Old Files


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Cleaning Old Files


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Cleaning Old Files Use it with Cron


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Shutdown Server Scenario Local server crashes I cannot shut down my rails server with ctrl + c


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Shutdown Server > lsof –i:3000 > kill -9 PID


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Shutdown Server


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Importing MySQL database with .sql Scenario When there is bug Importing production DB to local DB


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Importing MySQL database with .sql > ssh username@100.100.100.100 > mysqldump –u username –p db_name > db.sql > exit > scp username@100.100.100.100:db.sql db.sql > mysql –u username –p db_name < db.sql


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Importing MySQL database with .sql


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Cases Scripts are task-specific Find patterns in your tasks


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Managing Scripts


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Managing Scripts If you do not manage scripts… Scripts everywhere You have to remember file locations


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Managing Scripts Purpose All scripts at a glance Write once, run everywhere


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Rake


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Managing Scripts Rake Managing all rake tasks in ~/.rake folder task_a.rake task_b.rake Prefixing ‘rake’ command Description support


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Managing Scripts


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Managing Scripts Managing tasks like in Rails restart.rake import.rake local_ip.rake clean.rake Thus, run `rake` command from anywhere (add –g option if necessary)


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Executables


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Managing Scripts Make scripts executables Separate scripts by commands The bad part Too many commands Conflicting with existing commands


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Managing Scripts > chmod 755 hello.rb > mv hello.rb hello > ./hello


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Managing Scripts Change the following line in your ‘.bashrc’: export PATH=“/user/bin:/usr/local/bin” To: export PATH=“/user/bin:/usr/local/bin:/scripts” And you can do: > hello


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That’s it!


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Recap Scripts are small programs solving small problems Scripts are case-specific Automation saves energy & time Managing scripts with rake


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Make your own scripts!


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Thank you! Slides are available on my Twitter @adler_hsieh


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