% sudo gem install rails
Fetching zeitwerk-2.3.0.gem
Fetching activesupport-6.0.2.1.gem
Fetching rack-2.2.2.gem
Fetching rack-test-1.1.0.gem
Fetching crass-1.0.6.gem
Fetching loofah-2.4.0.gem
Fetching rails-html-sanitizer-1.3.0.gem
Fetching rails-dom-testing-2.0.3.gem
Fetching builder-3.2.4.gem
Fetching erubi-1.9.0.gem
Fetching actionview-6.0.2.1.gem
Fetching actionpack-6.0.2.1.gem
Fetching activemodel-6.0.2.1.gem
Fetching activerecord-6.0.2.1.gem
Fetching globalid-0.4.2.gem
Fetching activejob-6.0.2.1.gem
Fetching websocket-extensions-0.1.4.gem
Fetching mini_mime-1.0.2.gem
Fetching mail-2.7.1.gem
Fetching actionmailer-6.0.2.1.gem
Fetching nio4r-2.5.2.gem
Fetching actioncable-6.0.2.1.gem
Fetching mimemagic-0.3.4.gem
Fetching websocket-driver-0.7.1.gem
Fetching marcel-0.3.3.gem
Fetching activestorage-6.0.2.1.gem
Fetching actionmailbox-6.0.2.1.gem
Fetching actiontext-6.0.2.1.gem
Fetching thor-1.0.1.gem
Fetching method_source-0.9.2.gem
Fetching railties-6.0.2.1.gem
Fetching sprockets-4.0.0.gem
Fetching sprockets-rails-3.2.1.gem
Fetching rails-6.0.2.1.gem
Successfully installed zeitwerk-2.3.0
Successfully installed activesupport-6.0.2.1
ERROR: While executing gem … (Gem::FilePermissionError)
You don’t have write permissions for the /usr/bin directory.
インストールする場所をオプションで指定する
% sudo gem install rails -n /usr/local/bin
Successfully installed rack-2.2.2
Successfully installed rack-test-1.1.0
Successfully installed crass-1.0.6
Successfully installed loofah-2.4.0
Successfully installed rails-html-sanitizer-1.3.0
Successfully installed rails-dom-testing-2.0.3
Successfully installed builder-3.2.4
Successfully installed erubi-1.9.0
Successfully installed actionview-6.0.2.1
Successfully installed actionpack-6.0.2.1
Successfully installed activemodel-6.0.2.1
Successfully installed activerecord-6.0.2.1
Successfully installed globalid-0.4.2
Successfully installed activejob-6.0.2.1
Successfully installed mini_mime-1.0.2
Successfully installed mail-2.7.1
Successfully installed actionmailer-6.0.2.1
Building native extensions. This could take a while…
Successfully installed nio4r-2.5.2
Successfully installed websocket-extensions-0.1.4
Building native extensions. This could take a while…
Successfully installed websocket-driver-0.7.1
Successfully installed actioncable-6.0.2.1
Successfully installed mimemagic-0.3.4
Successfully installed marcel-0.3.3
Successfully installed activestorage-6.0.2.1
Successfully installed actionmailbox-6.0.2.1
Successfully installed actiontext-6.0.2.1
Successfully installed thor-1.0.1
Successfully installed method_source-0.9.2
Successfully installed railties-6.0.2.1
Successfully installed sprockets-4.0.0
Successfully installed sprockets-rails-3.2.1
Successfully installed rails-6.0.2.1
Parsing documentation for rack-2.2.2
Installing ri documentation for rack-2.2.2
Parsing documentation for rack-test-1.1.0
Installing ri documentation for rack-test-1.1.0
Parsing documentation for crass-1.0.6
Installing ri documentation for crass-1.0.6
Parsing documentation for loofah-2.4.0
Installing ri documentation for loofah-2.4.0
Parsing documentation for rails-html-sanitizer-1.3.0
Installing ri documentation for rails-html-sanitizer-1.3.0
Parsing documentation for rails-dom-testing-2.0.3
Installing ri documentation for rails-dom-testing-2.0.3
Parsing documentation for builder-3.2.4
Installing ri documentation for builder-3.2.4
Parsing documentation for erubi-1.9.0
Installing ri documentation for erubi-1.9.0
Parsing documentation for actionview-6.0.2.1
Installing ri documentation for actionview-6.0.2.1
Parsing documentation for actionpack-6.0.2.1
Installing ri documentation for actionpack-6.0.2.1
Parsing documentation for activemodel-6.0.2.1
Installing ri documentation for activemodel-6.0.2.1
Parsing documentation for activerecord-6.0.2.1
Installing ri documentation for activerecord-6.0.2.1
Parsing documentation for globalid-0.4.2
Installing ri documentation for globalid-0.4.2
Parsing documentation for activejob-6.0.2.1
Installing ri documentation for activejob-6.0.2.1
Parsing documentation for mini_mime-1.0.2
Installing ri documentation for mini_mime-1.0.2
Parsing documentation for mail-2.7.1
Installing ri documentation for mail-2.7.1
Parsing documentation for actionmailer-6.0.2.1
Installing ri documentation for actionmailer-6.0.2.1
Parsing documentation for nio4r-2.5.2
Installing ri documentation for nio4r-2.5.2
Parsing documentation for websocket-extensions-0.1.4
Installing ri documentation for websocket-extensions-0.1.4
Parsing documentation for websocket-driver-0.7.1
Installing ri documentation for websocket-driver-0.7.1
Parsing documentation for actioncable-6.0.2.1
Installing ri documentation for actioncable-6.0.2.1
Parsing documentation for mimemagic-0.3.4
Installing ri documentation for mimemagic-0.3.4
Parsing documentation for marcel-0.3.3
Installing ri documentation for marcel-0.3.3
Parsing documentation for activestorage-6.0.2.1
Installing ri documentation for activestorage-6.0.2.1
Parsing documentation for actionmailbox-6.0.2.1
Installing ri documentation for actionmailbox-6.0.2.1
Parsing documentation for actiontext-6.0.2.1
Installing ri documentation for actiontext-6.0.2.1
Parsing documentation for thor-1.0.1
Installing ri documentation for thor-1.0.1
Parsing documentation for method_source-0.9.2
Installing ri documentation for method_source-0.9.2
Parsing documentation for railties-6.0.2.1
Installing ri documentation for railties-6.0.2.1
Parsing documentation for sprockets-4.0.0
Installing ri documentation for sprockets-4.0.0
Parsing documentation for sprockets-rails-3.2.1
Installing ri documentation for sprockets-rails-3.2.1
Parsing documentation for rails-6.0.2.1
Installing ri documentation for rails-6.0.2.1
Done installing documentation for rack, rack-test, crass, loofah, rails-html-sanitizer, rails-dom-testing, builder, erubi, actionview, actionpack, activemodel, activerecord, globalid, activejob, mini_mime, mail, actionmailer, nio4r, websocket-extensions, websocket-driver, actioncable, mimemagic, marcel, activestorage, actionmailbox, actiontext, thor, method_source, railties, sprockets, sprockets-rails, rails after 37 seconds
32 gems installed
% rails -v
Rails 6.0.2.1
You don’t have write permissions for the /usr/bin directory.
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