《一》安装ruby 安装cocoapods先要安装ruby环境
对于新入门的开发者，如何安装 Ruby和Ruby Gems 的运行环境可能会是个问题，本页主要介绍如何用一条靠谱的路子快速安装 Ruby 开发环境。
此安装方法同样适用于产品环境！
系统需求
首先确定操作系统环境，不建议在 Windows 上面搞，所以你需要用:
强烈新手使用 Ubuntu 省掉不必要的麻烦！
以下代码区域，带有 $ 打头的表示需要在控制台（终端）下面执行（不包括 $ 符号）
步骤0 － 安装系统需要的包
# For Mac
# 先安装 [Xcode](http://developer.apple.com/xcode/) 开发工具，它将帮你安装好 Unix 环境需要的开发包
步骤1 － 安装 RVM
RVM 是干什么的这里就不解释了，后面你将会慢慢搞明白。
$ curl -L https://get.rvm.io | bash -s stable
期间可能会问你sudo管理员密码，以及自动通过homebrew安装依赖包，等待一段时间后就可以成功安装好 RVM。
然后，载入 RVM 环境（新开 Termal 就不用这么做了，会自动重新载入的）
$ source ~/.rvm/scripts/rvm
检查一下是否安装正确
$ rvm -v
rvm 1.22.17 (stable) by Wayne E. Seguin <[email protected]>, Michal Papis <[email protected]> [https://rvm.io/]
步骤2 － 用 RVM 安装 Ruby 环境
列出已知的ruby版本
$ rvm list known
可以选择现有的rvm版本来进行安装（下面以rvm 2.0.0版本的安装为例）
$ rvm install 2.0.0
同样继续等待漫长的下载，编译过程，完成以后，Ruby, Ruby Gems 就安装好了。
另附：
查询已经安装的ruby
$ rvm list
卸载一个已安装版本
$ rvm remove 1.9.2
步骤3 － 设置 Ruby 版本
RVM 装好以后，需要执行下面的命令将指定版本的 Ruby 设置为系统默认版本
$ rvm 2.0.0 --default
同样，也可以用其他版本号，前提是你有用 rvm install 安装过那个版本
这个时候你可以测试是否正确
$ ruby -v
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin13.0.0]
$ gem -v 2.1.6
这有可能是因为Ruby的默认源使用的是cocoapods.org，国内访问这个网址有时候会有问题，网上的一种解决方案是将远替换成淘宝的，替换方式如下：
$gem source -r https://rubygems.org/ $ gem source -a https://ruby.taobao.org
要想验证是否替换成功了，可以执行：
$ gem sources -l
正常的输出结果：
CURRENT SOURCES
http://ruby.taobao.org/
到这里就已经把Ruby环境成功的安装到了Mac OS X上，接下来就可以进行相应的开发使用了。
《二》 安装Cocoapods
gem是一个管理ruby库和程序的标准包，它通过Ruby Gem（如 http://rubygems.org/）源来查找、安装、升级和卸载软件包
但由于其外国网站，贼慢，故将其移除，添加使用淘宝的网站
一、换掉源头
1.安装：sudo gem install cocoapods 终止命令 ctrl + c
2.移除当前源：gem source --remove https://rubygems.org/ 显示https://rubygems.org/ removed from sources即移除成功
3.添加淘宝源：gem source -a https://ruby.taobao.org/ 添加gem source -a http://ruby.taobao.org/ 报404 后添加gem source -a https://ruby.taobao.org/ 即可 添加成功显示：https://ruby.taobao.org/ added to sources
4.查看源是否安装成功：gem sources -l 显示：*** CURRENT SOURCES ***
https://ruby.taobao.org/
二、升级gem为最新版本
sudo gem update --system
显示
Updating rubygems-update
Fetching: rubygems-update-2.6.6.gem (100%)
Successfully installed rubygems-update-2.6.6
Parsing documentation for rubygems-update-2.6.6
Installing ri documentation for rubygems-update-2.6.6
Installing darkfish documentation for rubygems-update-2.6.6
Installing RubyGems 2.6.6
RubyGems 2.6.6 installed
Parsing documentation for rubygems-2.6.6
Installing ri documentation for rubygems-2.6.6
=== 2.6.6 / 2016-06-22
Bug fixes:
* Sort installed versions to make sure we install the latest version when
running `gem update --system`. As a one-time fix, run
`gem update --system=2.6.6`. Pull request #1601 by David Radcliffe.
=== 2.6.5 / 2016-06-21
Minor enhancements:
* Support for unified Integer in Ruby 2.4. Pull request #1618
by SHIBATA Hiroshi.
* Update vendored Molinillo to 0.5.0 for performance improvements.
Pull request #1638 by Samuel Giddins.
Bug fixes:
* Raise an explicit error if Signer#sign is called with no certs. Pull
request #1605 by Daniel Berger.
* Update `update_bundled_ca_certificates` utility script for directory
nesting. Pull request #1583 by James Wen.
* Fix broken symlink support in tar writer (+ fix broken test). Pull
request #1578 by Cezary Baginski.
* Remove extension directory before (re-)installing. Pull request #1576
by Jeremy Hinegardner.
* Regenerate test CA certificates with appropriate extensions. Pull
request #1611 by rhenium.
* Rubygems does not terminate on failed file lock when not superuser. Pull
request #1582 by Ellen Marie Dash.
* Fix tar headers with a 101 character name. Pull request #1612 by Paweł
Tomulik.
* Add Gem.platform_defaults to allow implementations to override defaults.
Pull request #1644 by Charles Oliver Nutter.
* Run Bundler tests on TravisCI. Pull request #1650 by Samuel Giddins.
=== 2.6.4 / 2016-04-26
Minor enhancements:
* Use Gem::Util::NULL_DEVICE instead of hard coded strings. Pull request #1588
by Chris Charabaruk.
* Use File.symlink on MS Windows if supported. Pull request #1418
by Nobuyoshi Nakada.
Bug fixes:
* Redact uri password from error output when gem fetch fails. Pull request
#1565 by Brian Fletcher.
* Suppress warnings. Pull request #1594 by Nobuyoshi Nakada.
* Escape user-supplied content served on web pages by `gem server` to avoid
potential XSS vulnerabilities. Samuel Giddins.
=== 2.6.3 / 2016-04-05
Minor enhancements:
* Lazily calculate Gem::LoadError exception messages. Pull request #1550
by Aaron Patterson.
* New fastly cert. Pull request #1548 by David Radcliffe.
* Organize and cleanup SSL certs. Pull request #1555 by James Wen.
* [RubyGems] Make deprecation message for paths= more helpful. Pull
request #1562 by Samuel Giddins.
* Show default gems when using "gem list". Pull request #1570 by Luis
Sagastume.
Bug fixes:
* Stub ordering should be consistent regardless of how cache is populated.
Pull request #1552 by Aaron Patterson.
* Handle cases when the @@stubs variable contains non-stubs. Pull request
#1558 by Per Lundberg.
* Fix test on Windows for inconsistent temp path. Pull request #1554 by
Hiroshi Shirosaki.
* Fix `Gem.find_spec_for_exe` picks oldest gem. Pull request #1566 by
Shinichi Maeshima.
* [Owner] Fallback to email and userid when owner email is missing. Pull
request #1569 by Samuel Giddins.
* [Installer] Handle nil existing executable. Pull request #1561 by Samuel
Giddins.
* Allow two digit version numbers in the tests. Pull request #1575 by unak.
=== 2.6.2 / 2016-03-12
Bug fixes:
* Fix wrong version of gem activation for bin stub. Pull request #1527 by
Aaron Patterson.
* Speed up gem activation failures. Pull request #1539 by Aaron Patterson.
* Fix platform sorting in the resolver. Pull request #1542 by Samuel E.
Giddins.
* Ensure we unlock the monitor even if try_activate throws. Pull request
#1538 by Charles Oliver Nutter.
=== 2.6.1 / 2016-02-28
Bug fixes:
* Ensure `default_path` and `home` are set for paths. Pull request #1513
by Aaron Patterson.
* Restore but deprecate support for Array values on `Gem.paths=`. Pull
request #1514 by Aaron Patterson.
* Fix invalid gem file preventing gem install from working. Pull request
#1499 by Luis Sagastume.
=== 2.6.0 / 2016-02-26
Minor enhancements:
* RubyGems now defaults the `gem push` to the gem's "allowed_push_host"
metadata setting. Pull request #1486 by Josh Lane.
* Update bundled Molinillo to 0.4.3. Pull request #1493 by Samuel E. Giddins.
* Add version option to gem open command. Pull request #1483 by Hrvoje
Šimić.
* Feature/add silent flag. Pull request #1455 by Luis Sagastume.
* Allow specifying gem requirements via env variables. Pull request #1472
by Samuel E. Giddins.
Bug fixes:
* RubyGems now stores `gem push` credentials under the host you signed-in for.
Pull request #1485 by Josh Lane.
* Move `coding` location to first line. Pull request #1471 by SHIBATA
Hiroshi.
* [PathSupport] Handle a regexp path separator. Pull request #1469 by
Samuel E. Giddins.
* Clean up the PathSupport object. Pull request #1094 by Aaron Patterson.
* Join with File::PATH_SEPARATOR in Gem.use_paths. Pull request #1476 by
Samuel E. Giddins.
* Handle when the gem home and gem path arent set in the config file. Pull
request #1478 by Samuel E. Giddins.
* Terminate TimeoutHandler. Pull request #1479 by Nobuyoshi Nakada.
* Remove redundant cache. Pull request #1482 by Eileen M. Uchitelle.
* Freeze `Gem::Version@segments` instance variable. Pull request #1487 by
Ben Dean.
* Gem cleanup is trying to uninstall gems outside GEM_HOME and reporting
an error after it tries. Pull request #1353 by Luis Sagastume.
* Avoid duplicated sources. Pull request #1489 by Luis Sagastume.
* Better description for quiet flag. Pull request #1491 by Luis Sagastume.
* Raise error if find_by_name returns with nil. Pull request #1494 by
Zoltán Hegedüs.
* Find_files only from loaded_gems when using gemdeps. Pull request #1277
by Michal Papis.
------------------------------------------------------------------------------
RubyGems installed the following executables:
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/gem
Ruby Interactive (ri) documentation was installed. ri is kind of like man
pages for ruby libraries. You may access it like this:
ri Classname
ri Classname.class_method
ri Classname#instance_method
If you do not wish to install this documentation in the future, use the
--no-document flag, or set it as the default in your ~/.gemrc file. See
'gem help env' for details.
RubyGems system software updated
localhost:~ yanghuan$ clesr
-bash: clesr: command not found
localhost:~ yanghuan$ clesr
-bash: clesr: command not found
localhost:~ yanghuan$
三、安装cocoa pods
命令：sudo gem install cocoapods
报错，安装时：ERROR: Error installing cocoapods:
activesupport requires Ruby version >= 2.2.2.（原因ruby版本太低）
命令查看ruby的版本：ruby -v
ruby 2.0.0p645 (2015-04-13 revision 50299) [universal.x86_64-darwin15]
三（ 一 ）升级ruby版本
1、安装RVM：Ruby版本管理器，包括Ruby版本管理和Gem库管理
1.1安装RVM命令：curl -L get.rvm.io | bash -s stable
localhost:~ yanghuan$ curl -L get.rvm.io | bash -s stable
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 184 100 184 0 0 140 0 0:00:01 0:00:01 --:--:-- 140
100 22865 100 22865 0 0 5329 0 0:00:04 0:00:04 --:--:-- 9321
Downloading https://github.com/rvm/rvm/archive/1.27.0.tar.gz
Downloading https://github.com/rvm/rvm/releases/download/1.27.0/1.27.0.tar.gz.asc
curl: (35) Server aborted the SSL handshake
Could not download 'https://github.com/rvm/rvm/releases/download/1.27.0/1.27.0.tar.gz.asc'.
curl returned status '35'.
Installing RVM to /Users/yanghuan/.rvm/
Adding rvm PATH line to /Users/yanghuan/.profile /Users/yanghuan/.mkshrc /Users/yanghuan/.bashrc /Users/yanghuan/.zshrc.
Adding rvm loading line to /Users/yanghuan/.profile /Users/yanghuan/.bash_profile /Users/yanghuan/.zlogin.
Installation of RVM in /Users/yanghuan/.rvm/ is almost complete:
* To start using RVM you need to run `source /Users/yanghuan/.rvm/scripts/rvm`
in all your open shell windows, in rare cases you need to reopen all shell windows.
# yanghuan,
#
# Thank you for using RVM!
# We sincerely hope that RVM helps to make your life easier and more enjoyable!!!
#
# ~Wayne, Michal & team.
In case of problems: https://rvm.io/help and https://twitter.com/rvm_io
localhost:~ yanghuan$
1.2 、
命令：source ~/.bashrc （暂不知何用）
1.3、
命令：source ~/.bash_profile （暂不知何用）
1.4、
命令：rvm -v （查看ram版本，即查看rvm是否安装成功）
显示：rvm 1.27.0 (latest) by Wayne E. Seguin <[email protected]>, Michal Papis <[email protected]> [https://rvm.io/]
localhost:~ yanghuan$
2、用rvm升级ruby
2.1 命令 查看当前版本的ruby：ruby -v 显示：ruby 2.0.0p645 (2015-04-13 revision 50299) [universal.x86_64-darwin15]
2.2命令 列出已知版本的ruby：rvm list known
显示：
# MRI Rubies
[ruby-]1.8.6[-p420]
[ruby-]1.8.7[-head] # security released on head
[ruby-]1.9.1[-p431]
[ruby-]1.9.2[-p330]
[ruby-]1.9.3[-p551]
[ruby-]2.0.0[-p648]
[ruby-]2.1[.8]
[ruby-]2.2[.4]
[ruby-]2.3[.0]
[ruby-]2.2-head
ruby-head
# for forks use: rvm install ruby-head-<name> --url https://github.com/github/ruby.git --branch 2.2
# JRuby
jruby-1.6[.8]
jruby-1.7[.23]
jruby[-9.0.5.0]
jruby-head
# Rubinius
rbx-1[.4.3]
rbx-2.3[.0]
rbx-2.4[.1]
rbx[-2.5.8]
rbx-head
# Opal
opal
# Minimalistic ruby implementation - ISO 30170:2012
mruby[-head]
# Ruby Enterprise Edition
ree-1.8.6
ree[-1.8.7][-2012.02]
# GoRuby
goruby
# Topaz
topaz
# MagLev
maglev[-head]
maglev-1.0.0
# Mac OS X Snow Leopard Or Newer
macruby-0.10
macruby-0.11
macruby[-0.12]
macruby-nightly
macruby-head
# IronRuby
ironruby[-1.1.3]
ironruby-head
localhost:~ yanghuan$
2.2命令 安装ruby2.3：rvm install 2.3 接下来就是根据提示按了几下回车。。。。漫长等待中。。。。
显示：
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.11/x86_64/ruby-2.3.0.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for osx.
About to install Homebrew, press `Enter` for default installation in `/usr/local`,
type new path if you wish custom Homebrew installation (the path needs to be writable for user)
:
==> This script will install:
/usr/local/bin/brew
/usr/local/Library/...
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
==> The following directories will be made group writable:
/usr/local/.
/usr/local/bin
==> The following directories will have their owner set to yanghuan:
/usr/local/.
/usr/local/bin
==> The following directories will have their group set to admin:
/usr/local/.
/usr/local/bin
Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /bin/chmod g+rwx /usr/local/. /usr/local/bin
Password:
==> /usr/bin/sudo /usr/sbin/chown yanghuan /usr/local/. /usr/local/bin
==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local/. /usr/local/bin
==> /usr/bin/sudo /bin/mkdir -p /Users/yanghuan/Library/Caches/Homebrew
==> /usr/bin/sudo /bin/chmod g+rwx /Users/yanghuan/Library/Caches/Homebrew
==> /usr/bin/sudo /usr/sbin/chown yanghuan /Users/yanghuan/Library/Caches/Homebrew
==> Downloading and installing Homebrew...
remote: Counting objects: 532, done.
remote: Compressing objects: 100% (473/473), done.
remote: Total 532 (delta 32), reused 340 (delta 28), pack-reused 0
Receiving objects: 100% (532/532), 812.26 KiB | 27.00 KiB/s, done.
Resolving deltas: 100% (32/32), done.
From https://github.com/Homebrew/brew
* [new branch] master -> origin/master
HEAD is now at 06fe347 os/mac/ruby_keg: improve error reporting
==> Tapping homebrew/core
Cloning into '/usr/local/Library/Taps/homebrew/homebrew-core'...
remote: Counting objects: 3720, done.
remote: Compressing objects: 100% (3607/3607), done.
remote: Total 3720 (delta 15), reused 1856 (delta 4), pack-reused 0
Receiving objects: 100% (3720/3720), 2.88 MiB | 4.00 KiB/s, done.
Resolving deltas: 100% (15/15), done.
Checking connectivity... done.
Tapped 3598 formulae (3,746 files, 9.0M)
==> Installation successful!
==> Next steps
Run `brew help` to get started
Further documentation: https://git.io/brew-docs
==> Homebrew has enabled anonymous aggregate user behaviour analytics
Read the analytics documentation (and how to opt-out) here:
https://git.io/brew-analytics
Installing requirements for osx.
Updating system.....
Installing required packages: autoconf, automake, libtool, pkg-config, libyaml, readline, libksba, openssl........
Certificates in '/usr/local/etc/openssl/cert.pem' are already up to date.
Requirements installation successful.
Installing Ruby from source to: /Users/yanghuan/.rvm/rubies/ruby-2.3.0, this may take a while depending on your cpu(s)...
ruby-2.3.0 - #downloading ruby-2.3.0, this may take a while depending on your connection...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 13.5M 100 13.5M 0 0 64816 0 0:03:38 0:03:38 --:--:-- 74349
ruby-2.3.0 - #extracting ruby-2.3.0 to /Users/yanghuan/.rvm/src/ruby-2.3.0....
ruby-2.3.0 - #configuring...........................................................
ruby-2.3.0 - #post-configuration.
ruby-2.3.0 - #compiling.............................................................
ruby-2.3.0 - #installing.........
ruby-2.3.0 - #making binaries executable..
Installed rubygems 2.5.1 is newer than 2.4.8 provided with installed ruby, skipping installation, use --force to force installation.
ruby-2.3.0 - #gemset created /Users/yanghuan/.rvm/gems/ruby-2.3.0@global
ruby-2.3.0 - #importing gemset /Users/yanghuan/.rvm/gemsets/global.gems...........................................|
ruby-2.3.0 - #generating global wrappers........
ruby-2.3.0 - #gemset created /Users/yanghuan/.rvm/gems/ruby-2.3.0
ruby-2.3.0 - #importing gemsetfile /Users/yanghuan/.rvm/gemsets/default.gems evaluated to empty gem list
ruby-2.3.0 - #generating default wrappers........
ruby-2.3.0 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake).
Install of ruby-2.3.0 - #complete
Ruby was built without documentation, to build it run: rvm docs generate-ri
2.3命令 查看ruby版本 ruby -v 显示：ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
三（二 ）安装cocoapods
1.1 命令 安装cocoa pods：sudo gem install cocoapods
显示：
Fetching: i18n-0.7.0.gem (100%)
Successfully installed i18n-0.7.0
Fetching: thread_safe-0.3.5.gem (100%)
Successfully installed thread_safe-0.3.5
Fetching: tzinfo-1.2.2.gem (100%)
Successfully installed tzinfo-1.2.2
Fetching: concurrent-ruby-1.0.2.gem (100%)
Successfully installed concurrent-ruby-1.0.2
Fetching: activesupport-5.0.0.gem (100%)
Successfully installed activesupport-5.0.0
Fetching: nap-1.1.0.gem (100%)
Successfully installed nap-1.1.0
Fetching: fuzzy_match-2.0.4.gem (100%)
Successfully installed fuzzy_match-2.0.4
Fetching: cocoapods-core-1.0.1.gem (100%)
Successfully installed cocoapods-core-1.0.1
Fetching: claide-1.0.0.gem (100%)
Successfully installed claide-1.0.0
Fetching: cocoapods-deintegrate-1.0.0.gem (100%)
Successfully installed cocoapods-deintegrate-1.0.0
Fetching: cocoapods-downloader-1.1.0.gem (100%)
Successfully installed cocoapods-downloader-1.1.0
Fetching: cocoapods-plugins-1.0.0.gem (100%)
Successfully installed cocoapods-plugins-1.0.0
Fetching: cocoapods-search-1.0.0.gem (100%)
Successfully installed cocoapods-search-1.0.0
Fetching: cocoapods-stats-1.0.0.gem (100%)
Successfully installed cocoapods-stats-1.0.0
Fetching: netrc-0.7.8.gem (100%)
Successfully installed netrc-0.7.8
Fetching: cocoapods-trunk-1.0.0.gem (100%)
Successfully installed cocoapods-trunk-1.0.0
Fetching: cocoapods-try-1.1.0.gem (100%)
Successfully installed cocoapods-try-1.1.0
Fetching: molinillo-0.4.5.gem (100%)
Successfully installed molinillo-0.4.5
Fetching: colored-1.2.gem (100%)
Successfully installed colored-1.2
Fetching: xcodeproj-1.2.0.gem (100%)
Successfully installed xcodeproj-1.2.0
Fetching: escape-0.0.4.gem (100%)
Successfully installed escape-0.0.4
Fetching: fourflusher-0.3.2.gem (100%)
Successfully installed fourflusher-0.3.2
Fetching: cocoapods-1.0.1.gem (100%)
Successfully installed cocoapods-1.0.1
Parsing documentation for i18n-0.7.0
Installing ri documentation for i18n-0.7.0
Parsing documentation for thread_safe-0.3.5
Installing ri documentation for thread_safe-0.3.5
Parsing documentation for tzinfo-1.2.2
Installing ri documentation for tzinfo-1.2.2
Parsing documentation for concurrent-ruby-1.0.2
Installing ri documentation for concurrent-ruby-1.0.2
Parsing documentation for activesupport-5.0.0
Installing ri documentation for activesupport-5.0.0
Parsing documentation for nap-1.1.0
Installing ri documentation for nap-1.1.0
Parsing documentation for fuzzy_match-2.0.4
Installing ri documentation for fuzzy_match-2.0.4
Parsing documentation for cocoapods-core-1.0.1
Installing ri documentation for cocoapods-core-1.0.1
Parsing documentation for claide-1.0.0
Installing ri documentation for claide-1.0.0
Parsing documentation for cocoapods-deintegrate-1.0.0
Installing ri documentation for cocoapods-deintegrate-1.0.0
Parsing documentation for cocoapods-downloader-1.1.0
Installing ri documentation for cocoapods-downloader-1.1.0
Parsing documentation for cocoapods-plugins-1.0.0
Installing ri documentation for cocoapods-plugins-1.0.0
Parsing documentation for cocoapods-search-1.0.0
Installing ri documentation for cocoapods-search-1.0.0
Parsing documentation for cocoapods-stats-1.0.0
Installing ri documentation for cocoapods-stats-1.0.0
Parsing documentation for netrc-0.7.8
Installing ri documentation for netrc-0.7.8
Parsing documentation for cocoapods-trunk-1.0.0
Installing ri documentation for cocoapods-trunk-1.0.0
Parsing documentation for cocoapods-try-1.1.0
Installing ri documentation for cocoapods-try-1.1.0
Parsing documentation for molinillo-0.4.5
Installing ri documentation for molinillo-0.4.5
Parsing documentation for colored-1.2
Installing ri documentation for colored-1.2
Parsing documentation for xcodeproj-1.2.0
Installing ri documentation for xcodeproj-1.2.0
Parsing documentation for escape-0.0.4
Installing ri documentation for escape-0.0.4
Parsing documentation for fourflusher-0.3.2
Installing ri documentation for fourflusher-0.3.2
Parsing documentation for cocoapods-1.0.1
Installing ri documentation for cocoapods-1.0.1
Done installing documentation for i18n, thread_safe, tzinfo, concurrent-ruby, activesupport, nap, fuzzy_match, cocoapods-core, claide, cocoapods-deintegrate, cocoapods-downloader, cocoapods-plugins, cocoapods-search, cocoapods-stats, netrc, cocoapods-trunk, cocoapods-try, molinillo, colored, xcodeproj, escape, fourflusher, cocoapods after 19 seconds
23 gems installed
四、
1.初始化cocoapods（cocoapods安装后需要初始化，初始化的目的是将网络上的第三方框架的信息下载到本机上）
命令初始化cocoapods：pod setup
显示：Setting up CocoaPods master repo 更新仓库repo，访问国外的网站太慢，故更换仓库
ctrl + c 终止上述命令
2.命名 删除repo镜像国外服务器：pod repo remove master
显示：
[!] repo master does not exist
Usage:
$ pod repo remove NAME
Deletes the remote named `NAME` from the local spec-repos directory at
`~/.cocoapods/repos/.`
Options:
--silent Show nothing
--verbose Show more debugging information
--no-ansi Show output without ANSI codes
--help Show help banner of specified command
3.命令 更换repo镜像为国内服务器：pod repo add master https://git.coding.net/akuandev/Specs.git (俺没用) 或者 pod repo add master http://git.oschina.net/akuandev/Specs.git
localhost:~ yanghuan$ pod repo add master https://git.coding.net/akuandev/Specs.git
[!] To setup the master specs repo, please run `pod setup`.
4.命令 更新第三方库：pod repo update（非第一次更新cocoapods）
命令 更新第三方库：pod setup（第一次更新cocoapods）
创建并可以编辑Podfile的命令：vim Podfile ；输入 i，进入Podfile的编辑状态，可以向Podfile中添加第三方库；结束编辑点击键盘上的esc按钮，输入“:wq”即可保存并退出编辑；在非i状态下输入dd命令，删除当前行；
回到根目录命名：open ./
查看Podfile文件的内容：cat Podfile
5.创建一个工程
6.通过终端进入到此工程目录下
7.创建Podfile文件
vim Podfile 创建Podfile文件 (此种创建方式有问题) pod init 才是正确的
platform :ios, '8.0' 工程对应的iOS版本
pod ‘SDWebImage’ 添加第三方库（默认最新版本）
pod ‘Masonry’ ,’~>2.0’ 添加第三方库 （指定2.0版本的）
esc -》：-》wq退出Podfile文件的编辑
open ./ 进入当前文件夹
cat Podfile 查看Podfile文件的详细内容，能显示加入到Podfile文件的所有第三方库
pod install 从当前文件夹下找Podfile内的第三方并安装
//安装Masonry
添加某个都三方库的详细设置：
platform空格:iOS, ‘8.0’
pod ‘Masonry’(不分安装的版本) pod ‘Masonry’，‘~>0.0.2(安装0.0.2版本的Masonry)
pod search ‘Masonry’，‘~>0.0.2’
pod install 命令：在当前工程的文件目录下，执行此命令，从当前文件查找Podfile文件，并安装第三方框架
（
```
### Report
* What did you do?
* What did you expect to happen?
* What happened instead?
### Stack
```
CocoaPods : 1.0.1
Ruby : ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
RubyGems : 2.6.6
Host : Mac OS X 10.11.3 (15D21)
Xcode : 7.3 (7D175)
Git : git version 2.6.4 (Apple Git-63)
Ruby lib dir : /Users/yanghuan/.rvm/rubies/ruby-2.3.0/lib
Repositories : master - https://github.com/CocoaPods/Specs.git @ 327fd44f1a9f37642547eb32ac8b6cf32b30f58b
```
### Plugins
```
cocoapods-deintegrate : 1.0.0
cocoapods-plugins : 1.0.0
cocoapods-search : 1.0.0
cocoapods-stats : 1.0.0
cocoapods-trunk : 1.0.0
cocoapods-try : 1.1.0
```
### Podfile
```ruby
platform :ios, '8.0'
pod 'SDWebImage'
pod 'Masonry', '~2.0'
```
### Error
```
ArgumentError - Illformed requirement `"~2.0"`
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/requirement.rb:63:in `parse'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/requirement.rb:88:in `block in initialize'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/requirement.rb:88:in `map!'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/requirement.rb:88:in `initialize'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/requirement.rb:34:in `new'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/requirement.rb:34:in `create'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/dependency.rb:116:in `initialize'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile/target_definition.rb:713:in `new'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile/target_definition.rb:713:in `block in pod_dependencies'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile/target_definition.rb:709:in `map'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile/target_definition.rb:709:in `pod_dependencies'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile/target_definition.rb:95:in `non_inherited_dependencies'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile/target_definition.rb:71:in `dependencies'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile.rb:91:in `map'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-core-1.0.1/lib/cocoapods-core/podfile.rb:91:in `dependencies'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-1.0.1/lib/cocoapods/installer/analyzer.rb:642:in `sources'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-1.0.1/lib/cocoapods/installer.rb:144:in `resolve_dependencies'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-1.0.1/lib/cocoapods/installer.rb:114:in `install!'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-1.0.1/lib/cocoapods/command/install.rb:37:in `run'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/claide-1.0.0/lib/claide/command.rb:334:in `run'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-1.0.1/lib/cocoapods/command.rb:50:in `run'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/gems/cocoapods-1.0.1/bin/pod:55:in `<top (required)>'
/Users/yanghuan/.rvm/rubies/ruby-2.3.0/bin/pod:22:in `load'
/Users/yanghuan/.rvm/rubies/ruby-2.3.0/bin/pod:22:in `<main>'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/bin/ruby_executable_hooks:15:in `eval'
/Users/yanghuan/.rvm/gems/ruby-2.3.0@global/bin/ruby_executable_hooks:15:in `<main>'
```
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[!] Oh no, an error occurred.
Search for existing GitHub issues similar to yours:
https://github.com/CocoaPods/CocoaPods/search?q=Illformed+requirement+%60%22%7E2.0%22%60&type=Issues
If none exists, create a ticket, with the template displayed above, on:
https://github.com/CocoaPods/CocoaPods/issues/new
Be sure to first read the contributing guide for details on how to properly submit a ticket:
https://github.com/CocoaPods/CocoaPods/blob/master/CONTRIBUTING.md
Don't forget to anonymize any private data!
）
解决pod install出现的错误：
try1：sudo rm -fr ~/.cocoapods/repos/master ==> pod setup
pod --version 查看cocoa pods的版本号
为了安全起见，执行命令"sudogem uninstall cocoapods"，卸载原有的CocoaPod