This talk aims to go through basic scripting skills in Ruby. Participants will have a better understanding in managing their daily tasks with scripting. For example, we can setup automated scripts to delete old files on a daily basis instead of doing it manually. These can be done with Bash, Perl and many other scripting languages, but among of which Ruby is better known for its readability. It is easier to write, maintain, and reuse. It saves some time on system management and allows us to put more focus on the projects.

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

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

3. Only Basic Concept

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

5. What is Scripting

6. Let’s make it simple

8. Um…

9. Let’s make it a little useful

10. How do I get my local ip address?

11. > ifconfig

12. What is scripting
192.168.1.149
Your local ip address

13. What is scripting

14. What is scripting
Basically…
Small programs
solving
Small problems

15. Plus…
• Saves time
• Easy to write
• Easy to manage

16. And…
Show off

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

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

19. Cleaning Old Files

20. Cleaning Old Files

21. Cleaning Old Files
Use it with Cron

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

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

24. Shutdown Server

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

26. 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

27. Importing MySQL database with .sql

28. Cases
• Scripts are task-specific
• Find patterns in your tasks

29. Managing Scripts

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

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

32. Rake

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

34. Managing Scripts

35. 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)

36. Executables

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

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

39. 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

40. That’s it!

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

42. Make your own scripts!

43. Thank you!
Slides are available on my Twitter
@adler_hsieh