Intro to the command line
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The document discusses the command line interface (CLI) and its importance for programmers, highlighting frequently used commands like git and rails. It offers practical tips for improving command line skills and shortcuts for efficiency. Additionally, it suggests resources for further learning and configuring terminal settings.
Intro to the command line
- 1. The Command Line Your next best friend that you kinda still hate
- 2. What is it? • Windows: cmd.exe C:Usersmyusername> • OSX/Linux: Terminal computername:~ username $
- 3. What is it?
- 4. What do programmers use it for? In order of most frequent to least frequent: git git git git git git git git git git git status grep diff add log checkout commit push pull show rebase
- 5. What else? rails rails rails rails new myapp g model Blog title:string console db
- 6. What else? rake routes rake db:setup rake db:migrate
- 7. Much Less Frequently brew install rename # Mac gem install rails gem list -d gem list -r bundle rvm use 1.9 rvm use 2.0
- 8. Why should I care? One year from now you can automate your whole job... git log $(git merge-base master branch)..branch cut -f1,2 -d’ ’ ~/.bash_history | sort | uniq -c | sort -nr | head -n 30 wget -mk http://www.stuff.to/read/on/the/train/ rsync -rvP myproject/ username@myhost/myproject.com/ pg_dump --clean -Z 9 app_master | ssh user@apphost ‘zcat | psql -h localhost -U app appdb’
- 9. Don’t Panic
- 10. Basics cd projects/railsgirls/ cd .. pwd ls -l # # # # change into a directory get out of a directory print current directory list the files here ! • • Pay attention to the “current directory” • Press tab to complete filenames Press the up and down arrows to run previous commands
- 11. Get Unstuck man wget (spacebar for next page, q to quit) rails --help Most reliable: Google “wget command”
- 12. Stay Focused As a Rails developer, there are only a handful of commands you’ll use regularly. git rspec rake rails gem bundle irb ruby subl / vim open sudo ssh
- 13. Next Steps Incrementally improve your command line capability
- 14. git config --global color.ui true
- 15. echo "alias ls='ls -ohG'" >> ~/.bash_profile
- 16. Shortcuts up, down, tab up, down, tab up, down, tab up, down, tab up, down, tab
- 17. Ctrl-A Ctrl-E Alt-Delete start of the line end of the line delete previous word Works virtually anywhere! * ** * Terminal, Chrome, Sublime, Evernote, Keynote, XCode, LibreOffice, System Preferences, Gnome, KDE, XFCE4… ** Windows? Not sure.
- 18. More Shortcuts Ctrl-C Ctrl-R Alt-B Alt-F Alt-D stop current command (e.g. rails server) search for a previous command go back one word go forwards one word delete next word
- 19. Ctrl-R 1. Ctrl-R 2. Start typing (e.g. type “rebas”) 3. Ctrl-R to jump to next oldest match 4. Ctrl-S to jump to next newest match 5. Return to run, Esc to cancel
- 21. Configure iTerm2
- 22. Text
- 23. There Must Be a Better Way! There usually is