## Xcode
> In fact, Xcode is a compiler for iOS/OS X programs.But it provides many of the necessary compilers and libraries needed for your development environment.
You can install it from Mac App Store.
For xcode below 5.0 version, you must install the Command Line Tools in Preferences > Downloads.
If you use xcode5.0, you can check if you have it in Preferences > Locations > Command Line Tools
| # username = "my_username" | |
| # pwd = "my_password" | |
| # target_path = "my_target_path" | |
| # saving auth cookie | |
| system %Q{wget --save-cookies /tmp/cookie.txt --keep-session-cookies --post-data "username=#{username}&password=#{pwd}" -O - \ | |
| https://rubytapas.dpdcart.com/subscriber/login?__dpd_cart=d08391e6-5fe2-4400-8b27-2dc17b413027} | |
| (25..600).each do |i| |
| ;; | |
| ;; NS CHEATSHEET | |
| ;; | |
| ;; * :require makes functions available with a namespace prefix. | |
| ;; | |
| ;; * :use makes functions available without a namespace prefix | |
| ;; (i.e., refers functions to the current namespace). | |
| ;; | |
| ;; * :import refers Java classes to the current namespace. | |
| ;; |
| ag "^foo(bar)?" | |
| ag -i "foo bar" # ignore case | |
| ag --ignore "*.min.*" foo # ignore files/directory matching the pattern. | |
| ag -G '.*.css' foo # Limit files to which match the pattern. | |
| ag -l # Only print filenames that contain matches | |
| # search and replace | |
| ag --ignore "*.css" --ignore "*.min.js" -l 'halfings' | xargs perl -pi -E 's/halfings/halflings/g' |
| $ ps # | |
| $ ps aux | |
| $ ps aux | ag ruby | |
| $ ps aux | ag 9306 |
| # login to server | |
| $ ssh root@123.45.67.890 | |
| # change password | |
| $ passwd | |
| # add user | |
| $ adduser user |
| ruby 1.9.1p243 (2009-07-16 revision 24175) [x86_64-linux] | |
| curb (0.6.2.1) | |
| em-http-request (0.2.5) | |
| eventmachine (0.12.10) | |
| typhoeus (0.1.13) | |
| user system total real Memory (Kb) | |
| 4kb std | |
| 0.000000 0.000000 3.010000 ( 22.408594) 24,484 |
| # Notice: | |
| # ci will fail when the coverage is less than the minimum coverage | |
| bundler_args: --without development production | |
| language: ruby | |
| rvm: | |
| - 1.9.3 | |
| - 2.0.0 | |
| - 2.1.0 | |
| - ruby-head |
| namespace :figaro do | |
| desc "SCP transfer figaro configuration to the shared folder" | |
| task :setup do | |
| transfer :up, "config/application.yml", "#{shared_path}/application.yml", :via => :scp | |
| end | |
| desc "Symlink application.yml to the release path" | |
| task :finalize do | |
| run "ln -sf #{shared_path}/application.yml #{release_path}/config/application.yml" | |
| end |
| =Navigating= | |
| visit('/projects') | |
| visit(post_comments_path(post)) | |
| =Clicking links and buttons= | |
| click_link('id-of-link') | |
| click_link('Link Text') | |
| click_button('Save') | |
| click('Link Text') # Click either a link or a button | |
| click('Button Value') |