Gem Common commands
Gem-v # View version of RubyGems software
gem help #显示RubyGem使用帮助
Gems help Example #列出RubyGem命令一些使用范例
gem install [gemname] # ann Install the specified gem package, the program will first find the GEM
Ruby Gem command and rubygem command
I. Introduction
Gem is a standard package for managing Ruby libraries and programs. It is very convenient to find, install, upgrade, and uninstall software packages through Ruby Gem (such as http://rubygems.org/) sources. Ruby Gem is installed in Ruby 1.9.2 by default. If you are u
Transferred from: http://www.jianshu.com/p/728184da1699Gem Introduction:Gem is a standard package for managing Ruby libraries and programs, and it is easy to find, install, upgrade, and uninstall packages through Ruby Gems such as http://rubygems.org/.Ruby 1.9. Version 2 has the Ruby Gem installed by default, and if you are using a different distribution, see "How to Install Ruby Gem".How to install the Rub
Ruby-v # view the ruby VERSION ruby-e '''require "watir"; puts Watir: IE: version'' # view the watir VERSION
Rvm list known # list known ruby versions
Rvm install 1.9.3
Rvm use 1.9.3 | rvm use system
Rvm use 1.9.3 -- default
Rvm list # list local ruby versions
Rvm remove 1.9.2
For details, see RVM practical guide https://ruby-china.org/wiki/rvm-guide.
Gem-v # gem version
Tutorial on creating a custom Ruby gem package, rubygem
Write a simple example
1. Create the following folder
Note: The lib directory must have a rb file with the same name as your gem.
Copy codeThe Code is as follows:$ Cd hola$ Tree.├ ── Hola. gemspec── Lib└ ── Hola. rb
2. write code
. Hola. rb
% cat lib/hola.rb class Hola def self.hi puts "Hello world!" end end
. Hola. gemspec
% cat ho
want to view the help of the install command separately, you can use the NPM helper install--------------------------------------------------------------------------------------------------------Gem-v #gem版本Gem Update #更新所有包Gem Update--system #更新RubyGems软件Gem install Rake #
there. Else T, as it turns out, thereIsSomething out there: it's called the graphics execution manager, or gem. the intel-sored gem project is all of one month old, as of this writing. the gem developers had not really intended to announce their work quite yet, but the TTM discussion brought the issue to the fore.
Keith Packard's introduction to gemshortdes a do
Magic Gem House system development, Magic Gem House source code development, Magic Gem House Consulting: 185,2946,0381 Mr. Chen (micro-electric), Magic Gem House mode development, Magic Gem House app development, Magic Gem House P
Environment: OSX EI 10.11.1After switching to the gem source yesterday, there was no problem with the pod installation, or it could be used$ gem Sources--add https://ruby.taobao.org/--remove https://rubygems.org/$ sudo gem install CocoapodsToday when the use of the time, under a project to execute pod install half a day or so no response, but the CTRL + C forced
The following error is always reported when you install the gem.
WARNING: RubyGems 1.2 + index not found:
RubyGems will revert to legacy indexes degrading performance.
Or the gem install is too slow or cannot be connected to timeout.
You can install gem locally.
First go to the gem official website http://rubygems.org/
Common Ruby Package Manager gem commands and common rubygem commands
Gem-related commands
1. display the help and version of gemCopy codeThe Code is as follows:Gem-h/-- help# Display the help of gem
Gem-v/-- version# Display the gem version number2. List all available softwa
Create your own gem and upload it to githubCreate your own gem and upload it to the github environment: centos7, git version 1.8.3.11. Create gem1 to install bundler# Gem install bundler2. Use bundler to create the framework required for gem# Bundler gem file_manipulate3. Mo
Guaranteed Ruby and Gem without problemsRubyinstaller-1.9.2-p180.exe two radio boxes are selected when the installation is installed with an administrator openC:\Documents and Settings\administrator>rubyRuby 1.9.2p180 (2011-02-18) [i386-mingw32]ruby-vUpdate Rubygem gem Update--systemC:\Documents and Settings\administrator>gem-v1.5.2Gem Install/list/uninstall sele
Soul gem bzoj 2663, bzoj2663
Soul gem (1 s 128 MB) soulgem
[Problem description]
"As the soul of your body, in order to better use magic, you have been given a small and safe shape ······"
We know that the life of a magic girl is stored in a device called Soul Gem. Sometimes, when the soul gem is far away from the body
May be the cause of the national firewall package, the installation of Railsinstaller after the execution always error,
Bundle InstallDL is deprecated, fiddleFetching gem metadata from https://rubygems.org/.....Resolving dependencies ...
Gem::remotefetcher::fetcherror:ssl_connect returned=1 errno=0 State=sslv3 ReadServer certificate b:certificate verify failed (https://rubygems.org/gems/rake-1
In my previous blog post, I documented how Ruby operates the environment configuration of the MongoDB database in a Windows environment. The last step describes the driver package for installing MongoDB. Using the Gem Online installation method. The purpose of this article is to use GEMS for offline installation of GEM kits when the target machine or environment cannot connect to the Internet.1. in the http
After installing Ror, you plan to run a demo.
Question 1,
$ Ruby script/Server
Rails requires rubygems> = 1.3.1 (You have 1.2.0). Please 'gem update -- system' and try again.
Question 2,
Execute as prompted:$ Sudo gem update -- SystemBut it prompts that the usage of -- system has been disabled:Error: While executing gem... (runtimeerror)
SlaveRailsUpgrade to GEM uninstall and gem cleanupRecentRailsUpgrade from 1.1.6 to 1.2.1. If rails1.1.6 has been installed, how can this problem be solved?
1. Upgrade to 1.2.1 and retain 1.1.6If you do not want to delete the previous version, first download the local installation package rails1.2.1Http://bbs.railschina.com/thread-54-1-1.htmlRun the gem install y
Create your own gem and upload it to GitHubEnvironment: Centos7,git version 1.8.3.1Create a GEM1 installation bundler#gem Install Bundler2 frames required to create a gem using bundler#bundler Gem File_manipulate3 Modify File_manipulate.gemspec File#vim File_manipulate.gemspec(The description and summary are mostly mod
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