Ruby Gem Tips (GO)

Upgrading Ruby Gems

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1. Gem Update--system

View the Gem version

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1. Gem-v

View gem version, Gems installation directory, remote sources, etc.

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1. Gem ENV

View the remote sources you have added

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1. Gem sources

Add a source

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1. Gem sources-a ' htt://rubygems.org '

Install a gem package

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1. Gem Install Will_paginate

Specify source Location

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1. Gem install will_paginate--source ' http://rubygems.org '
2. Gem install will_paginate-s ' http://rubygems.org '

Specify version

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1. Gem Install rails-v=2.3.5

View all the gem packages that have been installed

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1. Gem List

or gem list-d to view specific information, such as Project Author,homepage, the path installed in the system, and so on, it is recommended to add this parameter ...
View the gem package at the beginning of D

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1. Gem List D

See more in more detail

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1. Gem List will_paginate-d

Uninstalling the Gem pack

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1. Gem Uninstall Rails

Uninstalling the specified version

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1. Gem Uninstall rails-v=2.1.0

Find a Gem Package

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1. Gem Search will_paginate--both (search contains will_paginate keywords in local and remote sources)
2. Gem List-r will_paginate
3. Gem LIST-DR will_paginate (I use this)

To view the gem package depends on other gems:

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1. Gem Dependency rails-v 2.3.5
2. Gem rails-2.3.5
3. Actionmailer (= 2.3.5, runtime)
4. Actionpack (= 2.3.5, runtime)
5. ActiveRecord (= 2.3.5, runtime)
6. Activeresource (= 2.3.5, runtime)
7. Activesupport (= 2.3.5, runtime)
8. Rake (>= 0.8.3, runtime)

View the RDOC Help for the Gem pack

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1. Gem Server (then http://localhost:8808 view)

Install on Windows platform

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1. Gem install Hpricot--platform=mswin32 # does not specify an error in Windows installation

Do not install RI and RDoc

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1. Gem Install Hpricot--no-ri--no-rdoc

For more gem help, you can

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1. Gem-h

Common GEM commands in projects

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2. RAKE-T Gems:
4. (in/usr/local/system/entos/netposa_redmine)
6. Rake Gems: Build # Build any native extensions for unpacked gems
8. Rake Gems: Build: Force # Force the build of all gems
10. Rake Gems: Install # installs all required gems.
12. Rake Gems: Refresh_specs # Regenerate gem specifications in correct format.
14. Rake Gems: Unpack # unpacks all required gems into vendor/gems.
16. Rake Gems: Unpack:d ependencies # unpacks all required gems and their dependencies into vendor/gems.

For example, you configured the paperclip gem in enviroment.rb

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1. Config.gem ' paperclip ', ' 2.3.5 '

So

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1. Rake Gems: Install

Will install paperclip 2.3.5 into your ruby directory,

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1. Rake Gems: Unpack:d ependencies

The dependent gem package will be unpack to the Vendor/gems directory,
If you are directly from the GEM package copy to the Vendor/gems directory, you need to perform

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1. Rake Gems: Refresh_specs

To generate the. Specifications file

Ruby Gem Tips (GO)