I have recently installed a system running ubuntu 12.04 LTS as part of a cluster of similar machines running the same software.
I have struck and issue with sys-proctable which when installed by default fails to load with the error:
/var/lib/gems/1.8/gems/sys-proctable-0.9.9-universal-linux/lib/linux/sys/proctable.rb:2:
undefined method `require_relative' for main:Object (NoMethodError)
Require_relative is a ruby 1.9 feature and ubuntu 12.04 installs 1.87.
I tried uninstalling the sys-proctable gem and installing the -0.9.4 version which is what I have on the other systems but I get
rful011#secmonprd07:~$ sudo gem -v 0.9.4 install sys-proctable
[sudo] password for rful011:
1.8.15
and nothing else.
I don't have much flexibility in changing ruby version or OS versions as this machine is part of a much bigger setup.
Any ideas why the attempt to install a specific version prints what appears to be a vesion number and then exits?
Any suggestions for minimalist work arounds.
The command to install a specific version of a gem is
$ gem install the_gem -v 1.2.3
i.e. in your case, with sudo, you should use:
$ sudo gem install sys-proctable -v 0.9.4
The command you have used is:
gem -v 0.9.4 install sys-proctable
i.e. you have the -v 0.9.4 before the install subcommand. In this case the gem executable interprets the -v as the version switch (this can also be specified with --version), which causes it to print out the version of Rubygems. Anything after the -v is ignored.
So there are two types of -v (or --version) flag. The first is written directly after gem (it is the first argument to the command) and causes it to print its version and exit, ignoring anything else on the command line. The second is placed after the gem name when using the install subcommand and specifies the version of the gem you want to be installed. You have just got the wrong one.
See gem help and gem help install for more details.
Related
I installed Ruby many moons ago but never use it. Perhaps I inadvertently broke it as I seem to be having troubles with getting it working with the sass command.
After running the brew install sass/sass/sass I get the following error with sass command:
rbenv: sass: command not found
The `sass' command exists in these Ruby versions:
2.1.10
2.5.0
ruby -v yields:
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin17]
which I'm guessing is the stock version of Ruby on a mac.
The rbenv command prints out help so it looks like I have that installed. brew list shows I have the ruby package installed. I upgraded ruby with brew but that didn't help (it reported I upgraded from 2.6.1 to 2.6.2. I don't appear to have rvm installed.
If you're using RVM you shouldn't need to brew install anything, in fact you shouldn't.
See documentation here https://github.com/sass/ruby-sass which is deprecated and will refer you to use https://github.com/sass/sassc-ruby instead.
brew uninstall any ruby and ruby packages and just use rbenv to manage your ruby versions.
Once you set your ruby version with rbenv global 2.6.1 for example or whatever version you want, then just do
gem install sassc
Or in your Gemfile add
gem 'sassc`
and run
bundle install
I'm following this tutorial: https://jekyllrb.com/docs/installation/macos/#homebrew
I've successfully installed ruby 2.5.3, however, when I run "ruby -v" on the command line in Terminal, it still says ruby 2.0.0.
My friend told me something about local vs universal installation of ruby and how that can create a conflict, but I'm completely new to this so I'm having trouble understanding how to update the 2.0.0 to 2.5.3 (which I've successfully installed on my machine).
I suggest you install RVM: https://rvm.io/
The install instruction is on the site.
After you're done installing RVM do.
rvm install 2.5.3
Then test with ruby -v to check if you have the version you want (2.5.3). If not we can help you from that point.
So I am using rbenv to set my ruby version (for the specific project I'm working on this is 2.1.1). The issue is that bundler is unable to detect this change. I even tried to set the version in my gemfile:
source "https://my-proxy-address"
ruby "2.1.1"
gem 'fileutils'
gem 'json'
gem 'chef-api'
However this then causes the exact error message as seen here at the end of the tutorial:
username#hostname:~/Desktop/working-bundler-env$ rbenv version
2.1.1 (set by /Users/username/.rbenv/version)
username#hostname:~/Desktop/working-bundler-env$ ruby -v
ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-darwin15.0]
username#hostname:~/Desktop/working-bundler-env$ bundle install
Your Ruby version is 2.0.0, but your Gemfile specified 2.1.1
The tutorial has the solution to the issue (edit a pathfile), however they dont say what file to change. What file do I change?
$ rbenv
rbenv 1.0.0
Usage: rbenv <command> [<args>]
Some useful rbenv commands are:
commands List all available rbenv commands
local Set or show the local application-specific Ruby version
global Set or show the global Ruby version
shell Set or show the shell-specific Ruby version
install Install a Ruby version using ruby-build
uninstall Uninstall a specific Ruby version
rehash Rehash rbenv shims (run this after installing executables)
version Show the current Ruby version and its origin
versions List all Ruby versions available to rbenv
which Display the full path to an executable
whence List all Ruby versions that contain the given executable
See `rbenv help <command>' for information on a specific command.
For full documentation, see: https://github.com/rbenv/rbenv#readme
$ which bundle
/usr/local/bin/bundle
So I noticed that when I ran gem bundle install the version was 1.13.3. After running sudo find / -name bundle I found two file locations that included that version number.
/Users/myusername/.gems/gems/bundler-1.13.3/exe/bundle
/Users/myusername/.gems/gems/bundler-1.13.3/lib/bundler/man/bundle
After attempting to run /Users/myusername/.gems/gems/bundler-1.13.3/exe/bundle install it works perfectly. So I just made an alias in my ~/.bash_profile that overwrote the incorrect bundle command.
alias bundle=/Users/alexcohen/.gems/gems/bundler-1.13.3/exe/bundle
The only side effect of this gem (for better or worse) is that it creates .bundle and path directories in the directory where I run bundle install where the gems are downloaded into.
I still have to investigate why this is happening, but I think that the bundle command in my macs terminal was referencing some type of broken bundler gem or file somewhere in my system.
I recently started learning Ruby and Ruby on Rails, and have watched a plethora of getting started materials. I have been finding lately that I keep getting errors where gems won't install or they will be installed but they can't be used for some reason, and I have decided that I want to remove everything down to once again just having Ruby installed and start over with the installation. One training video had me install most of my gems with RVM, so I don't know if that changes anything.
So in short my question is "How to I get rid of RVM, Rubygems, and all installed Gems so that I can start over with just Ruby?"
Edit: I am on Mac OS 10.6
gem uninstall -aIx
Uninstalls all gems without prompt.
Options
-a, --[no-]all Uninstall all matching versions
-I, --[no-]ignore-dependencies Ignore dependency requirements while
uninstalling
-x, --[no-]executables Uninstall applicable executables without
confirmation
From the RVM support site:
RVM installs everything into ~/.rvm.
To remove RVM from your system run 'rm
-rf ~/.rvm'. You may have one additional config file in ~/.rvmrc and
of course the RVM hook in your
bash/zsh startup files.
So, just go to the command line and type rm -rf ~/.rvm
All the installed gems are in the ~/.rvm folders, so doing the above will remove the gems and installed rubies in one go.
Gems you added pre-RVM with the default ruby install can be removed by typing this at the command prompt:
for x in `gem list --no-versions`; do gem uninstall $x -a -x -I; done
For Windows and Unix copy/paste in command prompt (Ruby 1.9.x).
ruby -e "`gem list`.split(/$/).each { |line| puts `gem uninstall -Iax #{line.split(' ')[0]}` unless line.strip.empty? }"
using RVM, you could just type...
rvm gemset empty GEMSET
where GEMSET is the gemset which you would like to empty. then...
install bundle
yum install bundler and finally
bundle install
rvm implode (see cli docs) seems to work - and it even tells you where to look at for leftovers
This is work for me on Ubuntu 16.04. For me, when I was executing
command rails -v it throw errors because of NameError. I have
installed 3 version of rails (4.2.0, 4.2.6, 5.0.0.1). I was trying
to uninstall unnecessary gem using command gem uninstall rails -v
version number but I won't able to, but I find a way to solve
this problem. In order to uninstall all gems, you have to loop
through all entries in gem list with bash scripting. This method is
very inconvenient. Thanks to Rubygems 2.1.0, you now could do it
with one command.
STEP - 1
Firstly, please make sure you upgrade your Rubygems to 2.1.0 or
newer. For this run this command (Incase you are working on an older
version. You can check your gem version using this command any one
of them gem -v or gem --version)
gem update --system
gem --version
STEP - 2
Run this command in you terminal
gem uninstall --all
Step - 3
Install gem bundles (it is not necessary I think just for
precautions)
gem install bundle
Step - 4
Install the rails on your system using this command
gem install rails -v specific version you want to install you can check the rails version on the official site rails all versions
example :- I have installed rails 4.2.6
version, you install as per requirement.
gem install rails -v 4.2.6
Step - 5
Finally check the version of installed rails framework application
by Using basic command rails -v. It will echoed the current
version of rails frameworks. Enjoy :)
References
http://ruby-journal.com/how-to-uninstall-all-ruby-gems/
http://guides.rubyonrails.org/v4.1/getting_started.html
Step 1:
I first kept running into an error that said:
You don't have write permissions for the /usr/bin directory
To get permission, I became a root user with (this is potentially dangerous for reasons beyond my current understanding):
sudo -s
Credit
Step 2:
Then, I kept running into an error that said:
[gem] cannot be uninstalled because it is a default gem
This allowed me to uninstall everything:
for i in `gem list --no-versions`; do gem uninstall -aIx $i; done
Credit
FWIW, there are some weird cases where gems are installed but not really installed:
This should do the trick reasonably reliably.
gem uninstall -Iax `gem list | grep default | awk '{print $1}'`
I am trying to install the ibm_db gem so that I can access DB2 from Ruby. When I try:
sudo gem install ibm_db
I get the following request for clarification:
Select which gem to install for your platform (i486-linux)
1. ibm_db 0.10.0 (ruby)
2. ibm_db 0.10.0 (mswin32)
3. ibm_db 0.9.5 (mswin32)
4. ibm_db 0.9.5 (ruby)
5. Skip this gem
6. Cancel installation
I am always going to be installing the linux version (which I assume is the "ruby" version), so is there a way to pick which one I will install straight from the gem install command?
The reason this is a problem is that I need to automate this install via a bash script, so I would like to select that I want the "ruby" version ahead of time.
You can use a 'here document'. That is:
sudo gem install ibm_db <<heredoc
1
heredoc
What's between the \<\<\SOMETHING and SOMETHING gets inputted as entry to the previous command (somewhat like ruby's own heredocuments). The 1 there alone, of course, is the selection of the "ibm_db 0.10.0 (ruby)" platform.
Hope it's enough.
Try this:
sudo gem install --platform ruby ibm_db
Note that you can get help on the install command using:
gem help install
UPDATE: Looks like this option only works for RubyGems 0.9.5 or above.
Try this, I think it only works on Bash though
sudo gem install ibm_db < <(echo 1)
#John Topley
I already tried gem help install, and --platform is not an option, both in help and in practice:
$ sudo gem install ibm_db --platform ruby
ERROR: While executing gem ... (OptionParser::InvalidOption)
invalid option: --platform
UPDATE: The Ubuntu repos have 0.9.4 version of rubygems, which doesn't have the --platform option. It appears it may be a new feature in 0.9.5, but there is still no online documentation for it, and regardless, it won't work on Ubuntu which is the platform I need it to work on.
Versions of Rubygems from 1.0 and up automatically detect the platform you are running and thus do not ask that question. Are you able to update your gems to the latest?
$ sudo gem update --system
Be warned if you are on Windows once you have updated; you might run into this issue.
Another option is to download the .gem file and install it manually as such:
sudo gem install path/to/ibm_db-0.10.0.gem
This particular gem was at rubyforge.