command gem install rails fails with permissions error? -


trying install gem (gem install rails) fails error:

error: while executing gem ... (gem::filepermissionerror)you don't have write permissions /usr/lib/ruby/gems/1.8 directory. having idea how solve this?

i trying installing rails unix.

sudo command allows execute command superuser

so following command should work you. 

sudo gem install rails

-

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