Ruby on Rails

i now see i misstyped the instructions to step 2.  here it is, corrected

2) type the command "wc -l `which rails`" -- if you can't figure out the quoting just use the result of step 1.  i.e. on my system "wc -l /opt/local/bin/rails"

the idea is to use the wc command to get the number of lined in the rails script you are calling by default.  the quoting used in wc -l `which rails` an open single quote - on a mac keyboard it's found on the key to the left of number one.  it's a bit of unix shell magic that causes the quoted text to be evalulated as a command and the results to be handed off the the wc -l command as argument(s).  thus, on my system, it becomes wc -l /opt/local/bin/rails.

in your case wc -l `which rails` would be equivalent to wc -l /home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails and i'll be surprised if the result is much greater than 6.  i don't use rvm so cannot help you troubleshoot rvm specific errors.  i can say that you don't want to be creating your new app anywhere inside the .../.rvm/... directory tree.  think of this as a managed software repository - anything that gets changed there is done through rvm.  make yourself a working directory, cd there and run the rails new command.  something like:

mkdir /home/mwr/RailsApps
cd /home/mwr/RailsApps
rails new my_new_app


On Friday, May 31, 2013 11:28:19 PM UTC-4, Ruby-Forum.com User wrote:

Hi Rick,
thanks! I tried carrying out those instructions: heres what i got -
mwr@mwr-Ubuntu:/home$ which rails
/home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails


mwr@mwr-Ubuntu:/home$ which
/home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails
/home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails

I suppose im having trouble with step 2 of your directions. However its
nice to have a kind of explanation of whats going on. Again, excuse my
illiteracy on this, but it look like maybe i do have rails installed in
my home directory?

**just discovered by accident I can do this:
mwr@mwr-Ubuntu:/home$ which
/home/mwr/.rvm.gems/ruby-1.9.3-p429/bin/rails
mwr@mwr-Ubuntu:/home$ wc -l 'which rails'
wc: which rails: No such file or directory
mwr@mwr-Ubuntu:/home$ cd ..
mwr@mwr-Ubuntu:/$ which rails
/home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails
mwr@mwr-Ubuntu:/$ which /home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails
/home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails
mwr@mwr-Ubuntu:/$ rails new path/here
      create
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:247:in
`mkdir': Permission denied - /path (Errno::EACCES)
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:247:in
`fu_mkdir'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:221:in
`block (2 levels) in mkdir_p'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:219:in
`reverse_each'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:219:in
`block in mkdir_p'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:205:in
`each'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/1.9.1/fileutils.rb:205:in
`mkdir_p'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/actions/empty_directory.rb:51:in
`block in invoke!'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/actions/empty_directory.rb:117:in
`call'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/actions/empty_directory.rb:117:in
`invoke_with_conflict_check'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/actions/empty_directory.rb:50:in
`invoke!'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/actions.rb:95:in
`action'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/actions/empty_directory.rb:15:in
`empty_directory'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/generators/app_base.rb:103:in
`create_root'
  from (eval):1:in `create_root'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/command.rb:27:in
`run'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/invocation.rb:120:in
`invoke_command'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/invocation.rb:127:in
`block in invoke_all'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/invocation.rb:127:in
`each'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/invocation.rb:127:in
`map'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/invocation.rb:127:in
`invoke_all'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/group.rb:233:in
`dispatch'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/thor-0.18.1/lib/thor/base.rb:439:in
`start'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/commands/application.rb:38:in
`<top (required)>'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in
`require'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in
`require'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/cli.rb:15:in
`<top (required)>'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in
`require'
  from
/home/mwr/.rvm/rubies/ruby-1.9.3-p429/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in
`require'
  from
/home/mwr/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/bin/rails:7:in
`<top (required)>'
  from /home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails:19:in `load'
  from /home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/rails:19:in `<main>'
  from /home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/ruby_noexec_wrapper:14:in
`eval'
  from /home/mwr/.rvm/gems/ruby-1.9.3-p429/bin/ruby_noexec_wrapper:14:in
`<main>'
mwr@mwr-Ubuntu:/$ ls
bin    dev   initrd.img      lib64       mnt   root  selinux  tmp
vmlinuz
boot   etc   initrd.img.old  lost+found  opt   run   srv      usr
vmlinuz.old
cdrom  home  lib             media       proc  sbin  sys      var

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