rvm是一個命令行工具，可以提供一個便捷的多版本ruby環境的管理和切換。
https://rvm.io/
如果你打算學習ruby/rails, rvm是必不可少的工具之一。
這里所有的命令都是再用戶權限下操作的，任何命令最好都不要用sudo.
rvm安裝
$ curl -L get.rvm.io | bash -s stable
$ source ~/.bashrc
$ source ~/.bash_profile
修改 RVM 的 Ruby 安裝源到國內的?淘寶鏡像服務器，這樣能提高安裝速度
$ sed -i -e 's/ftp\.ruby-lang\.org\/pub\/ruby/ruby\.taobao\.org\/mirrors\/ruby/g' ~/.rvm/config/db
ruby的安裝與切換
- 列出已知的ruby版本
rvm list known
- 安裝一個ruby版本
rvm install 1.9.3
這里安裝了最新的1.9.3,?rvm list known列表里面的都可以拿來安裝。
- 使用一個ruby版本
rvm use 1.9.3
如果想設置為默認版本，可以這樣
rvm use 1.9.3 --default?
- 查詢已經安裝的ruby
rvm list
- 卸載一個已安裝版本
rvm remove 1.9.2
gemset的使用
rvm不僅可以提供一個多ruby版本共存的環境，還可以根據項目管理不同的gemset.
gemset可以理解為是一個獨立的虛擬gem環境，每一個gemset都是相互獨立的。
比如你有兩個項目，一個是rails 2.3 一個是 rails 3. gemset可以幫你便捷的建立兩套gem開發環境，并且方便的切換。
gemset是附加在ruby語言版本下面的，例如你用了1.9.2, 建立了一個叫rails3的gemset,當切換到1.8.7的時候，rails3這個gemset并不存在。
- 建立gemset
rvm use 1.8.7
rvm gemset create rails23
- 然后可以設定已建立的gemset做為當前環境
use 可以用來切換語言，或者gemset,前提是他們已經被安裝(或者建立)。并可以在list命令中看到。
rvm use 1.8.7
rvm use 1.8.7@rails23
然后所有安裝的gem都是安裝在這個gemset之下。
- 列出當前ruby的gemset
rvm gemset list
- 清空gemset中的gem
如果你想清空一個gemset的所有gem,想重新安裝所有gem，可以這樣
rvm gemset empty 1.8.7@rails23
- 刪除一個gemset
rvm gemset delete rails2-3
項目自動加載gemset
rvm還可以自動加載gemset.
例如我們有一個rails3.1.3項目，需要1.9.3版本ruby.整個流程可以這樣。
rvm install 1.9.3
rvm use 1.9.3
rvm gemset create rails313
rvm use 1.9.3@rails313
下面進入到項目目錄，建立一個.rvmrc文件。
在這個文件里可以很簡單的加一個命令：
rvm use 1.9.3@rails313
然后無論你當前ruby設置是什么，cd到這個項目的時候，rvm會幫你加載 ruby 1.9.3和rails313 gemset.
使用rvm來快速部署nginx+passenger
*首先安裝passenger
gem install passenger
然后使用passenger-install-nginx-module 來安裝nginx和部署。
因為這一步需要root權限（因為要編譯nginx）可以用rvmsudo這個東西。（這個東西真是個好東西）
rvmsudo passenger-install-nginx-module
然后會讓你選擇是下載nginx源碼自動編譯安裝，還是自己選擇nginx源碼位置。
選擇nginx手動安裝的可以添加別的編譯參數，方便自定義編譯nginx。
然后一路下載安裝。默認的安裝位置為/opt/nginx.
然后看看nginx.conf，都給你配置好了，只需要加上root位置（yourapp/public）就可以了。
當我第一次安裝完成了，就驚呼，這也太爽了吧。
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?
RubyGems 鏡像 - 淘寶網
為什么有這個？
由于國內網絡原因（你懂的），導致?rubygems.org?存放在 Amazon S3 上面的資源文件間歇性連接失敗。所以你會與遇到?gem install rack?或?bundle install?的時候半天沒有響應，具體可以用?gem install rails -V來查看執行過程。
如何使用？
$ gem sources --remove https://rubygems.org/
$ gem sources -a http://ruby.taobao.org/
$ gem sources -l
*** CURRENT SOURCES ***http://ruby.taobao.org
# 請確保只有 ruby.taobao.org
$ gem install rails 如果你是用 Bundle (Rails 項目)
source 'http://ruby.taobao.org/'
gem 'rails', '3.2.12' ... Ruby 源代碼下載
- ruby-2.0.0-p247.tar.gz
- ruby-1.9.3-p448.tar.gz
- ruby-1.9.2-p320.tar.gz
- ruby-1.8.7-p358.tar.gz
RVM 改用本站作為下載源, 提高 Ruby 安裝速度
For Mac
$ sed -i .bak 's!ftp.ruby-lang.org/pub/ruby!ruby.taobao.org/mirrors/ruby!' $rvm_path/config/db For Linux
$ sed -i 's!ftp.ruby-lang.org/pub/ruby!ruby.taobao.org/mirrors/ruby!' $rvm_path/config/db --------------------------------------------------------------------------------------------------------------------------------------------------------------------
?
https://github.com/saberma/vimfiles
?
介紹
?
這是經典的vim on rails開發工具
安裝
請確保您已經安裝了git-core,vim-7.2,ruby,rvm
sudo apt-get install exuberant-ctags ncurses-term vim-noxgit clone git://github.com/saberma/vimfiles.git ~/.vim#初始化插件 cd ~/.vim git submodule init git submodule update ln -s ~/.vim/vimrc ~/.vimrccd ~/.vim/bundle/Command-T/ruby/command-t #一定要先切換回ruby1.8.7，否則vim會報錯:Vim: Caught deadly signal SEGV rvm system ruby extconf.rb make rvm default
注意
最新版本的rails vimfiles已經不再使用fuzzy_finder實現快速打開文件的功能，而改用CommandT
其快捷鍵也由原來的ctrl + t 改為 leader + t，leader鍵即\鍵
外部新增文件后，CommandT列表中看不到時，需要手動輸入:CommandTFlush，刷新緩存
升級
2011.08.19已升級至最新版本，手動升級方法如下:
cd ~/.vim git remote add akitaonrails git://github.com/akitaonrails/vimfiles.git git pull akitaonrails master git submodule foreach git pull
參考資源
使用說明參考這里
以下為akitaonrails原版詳細說明:
Vim
It is recommended that you use gVim in either Windows or Linux and MacVim for
Mac. Download from:
- (Windows)?http://www.vim.org/download.php#pc?(gvim73_46.exe)
- (Mac)?https://github.com/b4winckler/macvim/downloads?(snapshot-56)
Bundled Plugins
- Ack?– type :Ack [search pattern] to search your entire project
- Align?– align blocks of text using equal sign, make comment boxes and more
- bufexplorer?– manage your file buffers
- Command-T?– the fastest and most intuitive way for opening files in your project
- cucumber?– support for cucumber features such as syntax highlight, indentation, etc
- endwise?– support to close Ruby blocks such as ‘if’, ‘do’ with ‘end’
- fugitive?– support for Git, adding convenient commands such as :Gstatus, :Gread, :Gmove
- haml?– syntax highlight for HAML
- html5.vim?– omnicomplete function and syntax for HTML5
- markdown?– syntax highlight for Markdown
- NERD_commenter?– support to comment lines of code
- NERD_tree?– project pane that you can open with [leader] p
- ragtag?– easier way to create tags for html, erb, etc
- rails?– lot’s of tools to make it easier to manage your Rails projects
- snipmate?– support for textmate-like snippets for several languages
- supertab?– pseudo auto-complete with tab
- surround?– add, change, remove surrounding parentheses, brackets, quotes, etc
- syntastic?– checks for syntax errors in many languages
- textile?– syntax highlight for Textile
- vim-coffee-script?– syntax highlight for Coffee Script
- vim-jade?– Vim syntax highlighting for the Jade templating engine
- vim-jquery?– Vim syntax file to add some colorations for jQuery keywords and css selectors
- vim-preview?– [leader] P previews Markdown, Rdoc, Textile, html. Requires Ruby and other gems.
- vim-ruby-sinatra?– syntax highlight for Sinatra
- vim-ruby?– syntax highlight, smart identation, auto-complete for Ruby
- vim-textobj-rubyblock?– smart block selection in Ruby code
- vividchalk?– color scheme inspired by the classic Vibrant for Textmate
- Zencoding?– powerful way for HTML abbreviations (learn here:?http://code.google.com/p/zen-coding/). Type abbreviation and press Ctrl+Y+comma (c-y ,)
Usage
Troubleshoot: Because of the large amount of submodules, if you ever have any
trouble after pulling from the repository, it will be easier to just back up
your old .vim folder and just git clone a new version.
Clone this repo into your home directory either as .vim (linux/mac) or
vimfiles (Windows). Such as:
git clone git://github.com/akitaonrails/vimfiles.git ~/.vim
Then ‘cd’ into the repo and run this to get the snippets submodule:
git submodule update --init
Now you should create a new?.vimrc?file in your home directory that
loads the pre-configured one that comes bundled in this package. You can do it
on Linux/Mac like this:
echo "source ~/.vim/vimrc" > ~/.vimrc
On Windows you should create a?_vimrc?(underline instead of dot) and add
the following line inside:
source ~/vimfiles/vimrc
This way you can override the default configuration by adding your own inside
this file.
You should also create a new?.gvimrc?file in your home directory. You can do
it on Linux/Mac like this:
echo "source ~/.vim/gvimrc" > ~/.gvimrc
On Windows you should create a?_gvimrc?(underline instead of dot) and add
the following line inside:
source ~/vimfiles/gvimrc
This way you can override the default GUI configuration by adding your own inside
this file.
Help Tags
At first usage of vim, type “:” while in command mode and execute:
call pathogen#helptags()
This will make the plugins documentations available upon :help
Dependencies
You will need these dependencies figured out:
- Ruby (for the fuzzy finder plugin)
- Exuberant Ctags (http://ctags.sourceforge.net/)
- Ncurses-term (in Linux only)
In Ubuntu, for example, you will have to do:
apt-get install exuberant-ctags ncurses-term
In OS X, you can install ctags with homebrew
brew install ctags
On Windows you have to download Ctags and add ctags.exe in your PATH.
Mac OS X and most Linux distros come with Ruby already. If you’re in Windows
look for Luis Lavena’s latest Ruby Installer (http://rubyforge.org/projects/rubyinstaller/)
IMPORTANT: Command-T
The latest version replaces the old Fuzzy Finder with a new one called
“Command-T” form wincent.com. I’ve replaced the old “Command-T” key
binding that used to open new tabs and assigned it to this new plugin
so it behaves the same as Textmate.
You may have problems in Mac/Linux because this plugin requires a native
extension, so you will have to do this:
rvm use system # use this line if using rvm
cd ~/.vim/bundle/Command-T/ruby/command-t
ruby extconf.rb
make
This means that you need to have your Ruby source files and GCC also
installed. A binary for Windows is already bundled so it should just
work. I’ve also included a binary compiled for Ruby Enterprise Edition,
but if you are using other Ruby distros, you will need to recompile.
There are binaries for Mac and Windows. The Mac version is compiled
against the default system Ruby for Mac OS X 10.6.5. The Windows version
is compiled against Ruby Installer 1.8.7-p330.
Ubuntu 11.04 and/or Vim 7.3.35
Ubuntu 11.04 comes bundled with Vim 7.3.35, which has “flaky” Ruby support.
Even if you do everything right, you might see the following crashes when
trying to use Command-T:
Vim: Caught deadly signal SEGV
Vim: Finished.Segmentation fault
If this happens to you, update Vim to 7.3.154:
hg clone https://vim.googlecode.com/hg/ ~/vim
cd ~/vim
hg update -C v7-3-154
./configure --enable-rubyinterp
make
sudo make install
More details can be found?here
Learn Vim
Visit the following sites to learn more about Vim:
- http://vimcasts.org
There are many sites teaching Vim, if you know of any other that are easy
to follow for newcomers, let me know.
Credits
- Original project and most of the heavy lifting: @scrooloose
- All the cool plugins for Rails, Cucumber and more: @timpope
- Great Command-T plugin by: Wincent
- Hacks and some snippets: @akitaonrails
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Installing Prebuilt Binaries with RVM
Originally posted 2012-12-21.
I've been working with a lot of virtual machines lately, and using RVM to install the version of ruby I need took longer than installing the base system. If you go through the motions of?rvm install {VERSION}, you might just gloss over this message:
No binary rubies available for: ubuntu/12.04/x86_64/{VERSION}.
Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies.
Not reading the documentation for?rvm mount?might end up costing you a lot of time.
RVM Prepare
RVM has a list of premade binaries that it will download if it gets the chance - you can see the list in/usr/local/rvm/config/remote?or?on github?(I used a system-wide RVM install for this. Your path may be ~/.rvm/config/remote). For binaries that don't exist in that list, there's the option of packaging your own.
I'll be assuming that we're building a 2.0.0-preview2 binary, using a server you can scp files to, which is also accessable at?http://artifacts.corp/binaries/
rvm install 2.0.0-preview2 rvm prepare 2.0.0-preview2 --install -r artifacts.corp:/var/www/binaries/The?rvm prepare?command should have made a file called?ruby-2.0.0-preview2.tar.bz2?in your current directory, and output something like the following.
--- upload:
ssh "artifacts.corp" "mkdir -p /var/www/binaries//ubuntu/12.04/x86_64/" scp "ruby-2.0.0-preview2.tar.bz2" "artifacts.corp:/var/www/binaries//ubuntu/12.04/x86_64/ruby-2.0.0-preview2.tar.bz2"RVM rightly cares quite a bit about the OS that the build will be installed on, and?strongly?recommends that you follow the naming convention seen in that output as a way to organize and name your builds. Once those commands are run and the file is uploaded, we'll be ready for the next time that we need to install 2.0.0-preview2 on this OS.
RVM Mount
There are two ways to download premade binaries -?rvm install {name}, which uses the list of prebuilt binaries if possible, or?rvm mount -r {URI}. The former works with data from configuration files, while the latter works using just command line parameters. Let's install our Ruby using mount first, since it takes fewer steps:
rvm mount -r http://artifacts.corp/binaries//ubuntu/12.04/x86_64/ruby-2.0.0-preview2.tar.bz2 --verify-downloads 1On the VM I tested this with,?rvm mount?takes 12 seconds, while?rvm install?takes 4 minutes. Of course, there's that?verify-downloads?flag and the lists of prebuilt binaries left to explain..
RVM Remote
As mentioned above, RVM has a list of prebuilt binaries for different platforms that it can download. In addition to the file (on ubuntu) at?/usr/local/rvm/config/remote, RVM will also use/usr/local/rvm/users/remote, if present. You can see the rubies that RVM can download as binaries for your system with?rvm list remote
# Rubies available for 'ubuntu/12.04/x86_64':rbx-2.0.0-rc1 ruby-1.9.3-p194 ruby-1.9.3-p286 ruby-1.9.3-p327If we add the URL to our precompiled 2.0.0-preview2 binary to?/usr/local/rvm/users/remote, it will show up in that list.
root$ echo "http://artifacts.corp/binaries//ubuntu/12.04/x86_64/ruby-2.0.0-preview2.tar.bz2" >> /usr/local/rvm/user/remote root$ rvm list remote # Rubies available for 'ubuntu/12.04/x86_64': rbx-2.0.0-rc1 ruby-1.9.3-p194 ruby-1.9.3-p286 ruby-1.9.3-p327 ruby-2.0.0-preview2For this bit, there is every chance that I am missing, or misunderstanding, something. This may not be the best or right way to do things
Even though it shows up in the remote list, we still have to tell RVM that our server is an acceptable place to download rubies from. We do this by adding it to another textfile.
echo "rvm_remote_server_url=http://artifacts.corp/" >> /usr/local/rvm/user/dbChecksums
At this point, if you try?rvm install 2.0.0-preview2?you would get an error message about checksums not matchng. With RVM's mount we used the?--verify-downloads?flag, which saves checksums of the file we download after the fact. Using that same flag,?rvm install 2.0.0-preview2 --verify-downloads 1, will download and install the package correctly.
If however, you want to have RVM to use checksums to verify the download was successful, we can refer way back to the rest of the output from our?rvm prepare?command:
--- rvm/config/md5: http://artifacts.corp/binaries/ruby-2.0.0-preview2.tar.bz2=fdb22cbad861616f5e3b56f0e3d976be --- rvm/config/sha512: http://artifacts.corp/binaries/ruby-2.0.0-preview2.tar.bz2=eb1972575cee09b0de59f39815b2f9992366cd6aaf3e32ab214d39b054029cf904260933e8b2fa101c7b5eb548d013e0e05c09d3e93dbc97a1ae55789d6a046bAnd add those lines to our?user/*?files
echo "http://artifacts.corp/binaries/ubuntu/12.04/x86_64/ruby-2.0.0-preview2.tar.bz2=eb1972575cee09b0de59f39815b2f9992366cd6aaf3e32ab214d39b054029cf904260933e8b2fa101c7b5eb548d013e0e05c09d3e93dbc97a1ae55789d6a046b" >> /usr/local/rvm/user/sha512 echo "http://artifacts.corp/binaries/ubuntu/12.04/x86_64/ruby-2.0.0-preview2.tar.bz2=fdb22cbad861616f5e3b56f0e3d976be" >> /usr/local/rvm/user/md5Now,?rvm install 2.0.0-preview2?will download a prebuilt binary from a server of your choosing, as well as verify that the checksum is the same as the package you built at the very beginning.
Phew.
：BP神經網絡)
