Thank you so much for your guidance Walter. On Wednesday, January 13, 2016 at 6:26:04 PM UTC+5:30, Walter Lee Davis wrote: > > > > On Jan 13, 2016, at 6:35 AM, vigneshwaran sivalingam <myna...@gmail.com > <javascript:>> wrote: > > > > Hi colin, I tried what you said, It reinstalled the ruby then rails, but > when it downloaded the nokogiri1.6.7.0.gem, it showed error. But anyway > rails was installed. When i checked the version it shows > > ~$ rails -v > > Ignoring executable-hooks-1.3.2 because its extensions are not built. > Try: gem pristine executable-hooks --version 1.3.2 > > Ignoring gem-wrappers-1.2.7 because its extensions are not built. Try: > gem pristine gem-wrappers --version 1.2.7 > > Ignoring nokogiri-1.6.7.1 because its extensions are not built. Try: > gem pristine nokogiri --version 1.6.7.1 > > Rails 4.2.5 > > > > > > You may want to ask on the Nokogiri mailing list ( > nokogi...@googlegroups.com <javascript:>) -- they are very good (and > quick) about installation problems. Also, as Colin mentioned, rvm can make > things very straightforward for you, not least because it does a ton of > work to make sure your build environment is "sane" before it tries to > install anything. If you can't build Nokogiri on a *nix machine, then there > is very likely something funny with your compiler or system libraries, and > rvm will tell you about that, down to which Debian package to use or which > source to compile or which Homebrew package to install to get it working. > Current and recent versions of Nokogiri bundle all the dependencies (time > was you needed a working libxml of a certain vintage to make it go) but you > still need a working compiler and link tool. > > Walter > > > > > On Wednesday, January 13, 2016 at 1:54:40 AM UTC+5:30, Colin Law wrote: > > On 12 January 2016 at 18:19, vigneshwaran sivalingam <myna...@gmail.com> > wrote: > > > I was trying to install rails in ubuntu 14.04, but I am getting the > > > following error. > > > > > > $gem install rails > > > ERROR: Error installing rails: > > > invalid gem: package is corrupt, exception while verifying: > undefined > > > method `size' for nil:NilClass (NoMethodError) in > > > > /home/usr/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/cache/nokogiri-1.6.7.1.gem > > > > > > I advise using rvm for installing ruby and rails. Others prefer rbenv. > > sudo apt install curl > > gpg --keyserver hkp://keys.gnupg.net --recv-keys > > 409B6B1796C275462A1703113804BB82D39DC0E3 > > \curl -sSL https://get.rvm.io | bash -s stable --rails > > > > The above should install the dependencies, rvm, ruby and rails. > > See https://rvm.io > > > > Colin > > > > -- > > You received this message because you are subscribed to the Google > Groups "Ruby on Rails: Talk" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to rubyonrails-ta...@googlegroups.com <javascript:>. > > To post to this group, send email to rubyonra...@googlegroups.com > <javascript:>. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/rubyonrails-talk/be248cb1-c0a5-4e6c-a158-d57491835f1d%40googlegroups.com. > > > > For more options, visit https://groups.google.com/d/optout. > >
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