I installed rbenv and it seems and copied 2 versions of ruby to ~/.rbenv/versions, it shows
them both correctly.
When I run
rbenv global 1.8.7-p72
It says ok and also points to it. However when I run--
ruby --version
I get ruby not found. Basically, the ruby executable is not found in the path. Can anyone help me with this problem?
My .bash_profile is
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
rbenv versions outputs --
1.8.7-p72
*1.9.3-p448 ( set by /home/user/.rbenv/version)
Also my ~/.rbenv/shims directory doesn't have a ruby executable. It has erb, gem,irb , rake, rdoc , ri and testrb. Could this be the issue?
I'm sorry I'm completely clueless
Did you execute all the step in the installation instructions https://github.com/sstephenson/rbenv? I.e. did you add the required snippets to your shell startup (.bash_profile) and so forth?
If you followed the instructions, could you provide the output of rbenv versions and which -a ruby for a start?
EDIT:
rbenv rehash seems to be what generates the shims. This must be executed every time you install a new ruby version. How did you install the rubies? With ruby-build, as recommended in the installation instructions?
When I encountered this error, all I had to do was to make sure that $PATH had shims prior to system version of ruby like so:
~/.rbenv/shims:/usr/local/bin:/usr/bin:/bin
When logged in as root and I type ruby -v centOS server reports 'ruby 1.9.3p392'. This is what I want.
But if I put rvmsudo ruby -v then I get 'ruby 1.8.7'. I do not want to use this older version, it is causing problems for my gitlab install.
I would like to remove it and make sure only v1.9 is used, how can I do this? Or should I leave it there but try and require certain users to use a different version?
Also, in case doing this messes anything up, is it possible to either;
a.see if anything on the server requires v1.8?
b.reverse the uninstall if it causes a problem?
Before uninstalling, take note of the patch level of 1.8.7 just in case. rvmsudo ruby -v should return something like ruby 1.8.7p234. The p#{num} is your patch level.
You should be able to uninstall 1.8.7 with rvm uninstall 1.8.7 (or possibly rvmsudo uninstall 1.8.7). This version of Ruby shouldn't be used by anything on the system other than code you've written, so it should only affect your applications and scripts.
The best way to tell what else would be using 1.8.7 is to look for scripts and crontabs that are owned by the user that rvm is running under. I'm not sure there's a tool that can evaluate it for you.
The best way to roll back in case of an emergency is rvm install 1.8.7-p#{num_from_above}. Alternatively, if you're on a platform like AWS or have rsync backups enabled, you might consider taking a snapshot that you can roll back to if you get in over your head.
Hope that's helpful!
Try setting default
$ rvm --default use 1.9.2
$ ruby -v
#ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-darwin10.4.0]
to remove you can use:
sudo apt-get remove ruby 1.8.7
Docs here & here
As you mentioned the ruby version output for root is ruby 1.9.3p392 in my understanding you will not have any problems.
Sure, you can have more than one version of ruby installed and find them under ~/.rvm/rubies. Also there you can find out the default version which is used. For more information you can have a look here: set default ruby where it explains how to set a default ruby and how to reset to the systems default.
You can uninstall cocoapods and install cocapods in the right directory.
sudo gem uninstall cocoapods
sudo gem install -n /usr/local/bin cocoapods
hi i need to execute a ruby program from a init script i need to run the script as
sudo /etc/bin/differ.sh start
but the problem is rvm is not installed on root(super user) . so code in the differ script ruby "filename" wont execute because the gems and rvm is not installed in root.
i need solve how to add rvm and its gems to root (i have not installed by system wide installation).i have even tried the rvmsudo
rvmsudo ruby "filename"
but it's not working in script works good in terminal.
please free to ask any files or outputs i will post along with this question.
This page on integrating RVM with init.d may help: https://rvm.io/integration/init-d
hey there jekyll users... I am new to using ruby/rvm and have followed the instructions to install it on my mac locally, and then installed the jekyll gem, but when i try to run jekyll commands I get
bash: jekyll: command not found
Any advice?
I know that when I installed rvm, (or maybe it was during the homebrew install), I received a notice that I have both .profile and .bash_profile and it asked me to add source ~/.profile to .bash_profile could that be the problem?
I've also tried installing using this command gem install --source http://rubygems.org jekyll
and it says it installs but when I try jekyll in the terminal, I keep getting command not found.
If there is any more information I need to post to help, please let me know.
I know that when I installed rvm, (or maybe it was during the homebrew install), I received a notice that I have both .profile and .bash_profile and it asked me to add source ~/.profile to .bash_profile could that be the problem?
Yes. Do what it said there and you should have access to the jekyll command.
user$ echo "source $HOME/.rvm/scripts/rvm" >> ~/.bash_profile
I read most of the solutions around the web and most of them seem to suggest a $PATH change. I don't like to edit my path unless I have to so I just did a symbolic link:
ln -s /usr/local/Cellar/ruby/2.0.0-p247/lib/ruby/gems/2.0.0/gems/jekyll-1.2.1/bin/jekyll
Here's an updated answer for 2020 (soon 2021).
One of the reasons you can get "command not found" after installing gems is because they were installed in a location that your bash shell does not yet know about. The way the computer looks up commands is by looking at the PATH, which is a list of folders where the computer should look for commands, such as jekyll.
The location of the gems depends on how you installed Ruby, and since there are many ways to install Ruby on a Mac, how to fix the "command not found" error will depend on how you installed Ruby. If you used a Ruby manager, such as RVM, rbenv, or chruby, then you might have missed a step in the installation instructions. They typically take care of the PATH for you automatically with a script. If you installed Ruby with Homebrew, then you'll need to add /usr/local/lib/ruby/gems/2.7.0/bin to your PATH, for example:
echo 'export PATH="/usr/local/opt/ruby/bin:/usr/local/lib/ruby/gems/2.7.0/bin:$PATH"' >> ~/.bash_profile
(Replace .bash_profile with .zshrc if you are using zsh. If you're not sure which shell you're using, read this: https://www.moncefbelyamani.com/which-shell-am-i-using-how-can-i-switch/)
I strongly believe that there should only be one recommended way to install Ruby, which is with a Ruby manager. I prefer chruby because it's the lightest and easiest to use. I wrote a script that will automatically set up a proper Ruby environment for you with chruby, including updating your PATH and everything else that is necessary to be able to install gems and use them right away without getting any errors.
You can read more about my script and other ways to fix the "command not found" error in these articles:
https://www.moncefbelyamani.com/troubleshooting-command-not-found-in-the-terminal/
https://www.moncefbelyamani.com/how-to-install-jekyll-on-a-mac-the-easy-way/
https://www.moncefbelyamani.com/the-definitive-guide-to-installing-ruby-gems-on-a-mac/
I am trying to get Jekyll running but I have no experience with Ruby.
As far as I can tell the installation of Jekyll has succeeded.
However:
$ jekyll
Gives an error:
-bash: jekyll: command not found
This is the gem env result:
- RUBYGEMS VERSION: 1.3.4
- RUBY VERSION: 1.8.7 (2010-01-10 patchlevel 249) [universal-darwin10.0]
- INSTALLATION DIRECTORY: /Volumes/HDD/DADU/gems
- RUBY EXECUTABLE: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
- EXECUTABLE DIRECTORY: /Volumes/HDD/DADU/gems/bin
- RUBYGEMS PLATFORMS:
- ruby
- universal-darwin-10
- GEM PATHS:
- /Volumes/HDD/DADU/gems
- /Volumes/HDD/DADU/.gem/ruby/1.8
- /Library/Ruby/Gems/1.8
- /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://gems.rubyforge.org/
And I found the following paths leading to "something" Jekyll:
~.gem/ruby/1.8/gems/jekyll-0.11.0/lib/jekyll.rb
~.gem/ruby/1.8/gems/bin/jekyll (exec file)
If you are using MacOS, from the Troubleshooting guide:
Jekyll & Mac OS X 10.11Permalink
With the introduction of System Integrity Protection, several directories that were previously writable are now considered system locations and are no longer available. Given these changes, there are a couple of simple ways to get up and running. One option is to change the location where the gem will be installed (again, using sudo only if necessary):
$ gem install -n /usr/local/bin jekyll
For others coming here with the following set up:
OS X + brewed install of ruby + (possibly) zsh
I figured the problem is that after installing jekyll as per their instructions, gem installs the jekyll gem in the brew cellar, not where the OS usually expects it (somehwere in a gem directory for ruby).
So, all that was needed here was to find out where the brew install of ruby installs gems, locate the jekyll binary, and create a symbolic link to it in /usr/bin.
Here is are the steps I took to fix it:
Type gem env and look for GEM PATHS. For me it was:
/usr/local/Cellar/ruby/1.9.3-p194/lib/ruby/gems/1.9.1.
Make sure you can see the jekyll binary in the directory from 1 above and copy its path (if you can't, search any other paths listed in GEM PATHS for it). For me it was:
/usr/local/Cellar/ruby/1.9.3-p194/lib/ruby/gems/1.9.1/gems/jekyll-1.4.3/bin/jekyll
Use the path from step 2 above to create a symlink to /usr/bin/jekyll. I did it by typing this (you might need sudo to create the symlink):
cd /usr/bin && ln -s /usr/local/Cellar/ruby/1.9.3-p194/lib/ruby/gems/1.9.1/gems/jekyll-1.4.3/bin/jekyll jekyll
Now all should be merry if you type jekyll.
The easiest method of doing this is to use RVM. It manages Ruby and all its gems for you and it's easy to use. See this link for using it.
If you did not want to use that you will need to modify your PATH variables so it can find your gems. I have found this to be tedious and reverted to RVM, but here are the general steps.
You will need to find out where your gems are getting installed. If you did gem install ... the gems will be in ~/.gem/ruby/1.8/gems/bin, if you used sudo gem install ... the gems will be somewhere in /System/Library/Frameworks/Ruby.framework/Versions/1.8/Resources
You have to add this path to your PATH variable. Easiest way to do this is by running :
echo 'PATH=$PATH:above/path/to/gems' >> ~/.bash_profile
If you are using RBENV instead of RVM you simply need to run rehash in the command line after installing jekyll:
rbenv rehash
I installed my ruby2.6.0 and gem via brew on MacOS 10.14.
For me, add the following line to my ~/.zshrc solved this issue.
export PATH=/usr/local/lib/ruby/gems/2.6.0/bin:$PATH
I found jekyll executable file with command locate jekyll.
Maybe a little late, but...
I had some trouble to install Jekyll on Ubuntu and tried everything that people answered in this thread - unfortunately nothing worked.
Then, I watched a video on Jekyll's site and after installing the whole ruby package again, sudo gem install jekyll worked.
Try it before anything else:
sudo apt-get update
sudo apt-get install ruby-full
sudo gem install jekyll
jekyll -v
It seems pretty simple, but it works on Ubuntu.
One solution would be editing your ~/.bashrc file and add this line:
PATH=$PATH:~/.gem/ruby/1.8/gems/bin
This will add ~/.gem/ruby/1.8/gems/bin in Bash's lookup path.
Reopen the terminal and it should work. Or you can use the following command:
. ~/.bashrc
Following steps solved my problem
gem uninstall jekyll
sudo gem install jekyll
Open ~/.bash_profile and add this code in the last line,
export PATH=$PATH:/usr/local/lib/ruby/gems/1.9.1/gems/jekyll-2.5.2/bin
Save and close the .bash_profile
Close and reopen the mac terminal, try running jekyll now, it should work
For me, I followed this installation guide instead of their main page's installation instruction. It worked after I changed the bash_profile file and restarted Terminal.
Jekyll is a ruby gem : Ruby gems in linux, for example, are in /var/lib/gems/1.8, as can be seen in the "ruby env" output.
Thus, you need to add the executables in this directory to your path.
In general, if a ruby gem is "not found" by your OS, it simply indicates that either
1) You don't have the gem installed or
2) You don't have the gem installed in a directory that is on your path.
I have found that there have been a few issues with installing ruby and ruby gems on linux (I have found that it can be tricky on Ubuntu v10, and have confirmed this with the Ruby folks on IRC). Thus, tools like RVM or rbenv might be the best approach to setting up a stable, maintainable ruby environment.
Easier than creating a symlink just install it correctly.
If you got permission errors like a lot of people are getting when trying to use
gem install jekyll
instead use
sudo gem install jekyll
#jayunit100,
I'm running into the same issue with a Jekyll blog. I've installed the gem via RVM in a 'Blog directory and the _config.yml file says that it should generate into Blog/_site. Is it as simple as adding Blog to the PATH or is there something else I'm missing?
Update: My bad, I didn't really have the gem installed. Lesson learned: rvm requirements and brew doctor are there for a reason - before you install stuff USE THEM
In my case I had to run bundle install --force
Then bundle exec jekyll serve works, but jekyll serve still doesn't. It seems I'll have to go with the former from now on…
When you use the --user-install option, RubyGems will install the gems to a directory inside your home directory, something like ~/.gem/ruby/1.9.1. The commands provided by the gems you installed will end up in ~/.gem/ruby/1.9.1/bin. For the programs installed there to be available for you, you need to add ~/.gem/ruby/1.9.1/bin to your PATH environment variable.
For example, if you use bash you can add that directory to your PATH by adding code like this to your ~/.bashrc file:
if which ruby >/dev/null && which gem >/dev/null; then
PATH="$(ruby -r rubygems -e 'puts Gem.user_dir')/bin:$PATH"
fi
https://guides.rubygems.org/faqs/#user-install
I put it in the .bash_profile (Mac OS X).
https://hathaway.cc/2008/06/how-to-edit-your-path-environment-variables-on-mac/
Here's an updated answer for 2020 (soon 2021). To install any Ruby gem, whether it's Jekyll, Bundler, Rails, etc., you need a proper Ruby development environment on a Mac. There are various ways to install Ruby on a Mac, as I have written about in great detail in my definitive guide to installing Ruby gems on a Mac. The only one I recommend is to use a Ruby manager because it's the most flexible and sets you up for success for the long term. My preferred one is chruby because it's the lightest and easiest to use. As part of installing Ruby, you also need to properly configure your shell startup file (typically ~/.zshrc or ~/.bash_profile) so that it knows where to find the gems you install. Otherwise, you'll get the "command not found" error, which I've also written about.
Since there are several steps involved in setting up a working Ruby development environment on a Mac, I wrote some scripts to automate the whole process and make things easier and faster for people. You can read more about the scripts in my guide mentioned above.
I had this problem for a very stupid reason, which is that I was working on Linux and had installed both flatpak and .deb versions of Visual Studio Code. I was confused because I could successfully run bundle exec jekyll serve in the terminal application, but not from the integrated terminal in Visual Studio Code.
Well, it turns out the integrated terminal loaded my PATH correctly in the .deb version but not the flatpak one. So... if you, like me, have foolishly installed multiple versions of Visual Studio Code, check which one you are using.
This is what worked for me. I'm not developing in ruby, and don't have a lot of tools that I use it for, so I don't need RVM. I also don't need to install jekyll as root. I just want it to run.
(This answer is just a more descriptive version of answers by Santa Zhang, jayunit100, and a few others.)
1. Find Local Gem Path
> gem env
Assuming this runs, it will list a bunch of useful information. You are looking for GEM PATHS. If there are two, then you want the one that is found in your home directory. Mine was something like /home/<user>/.local/share/gem/ruby/3.0.0
If it doesn't run, install the ruby gem program and try again.
2. Find Gem Binaries Path
Look in that directory until you find the location where the jekyll executable is actually installed. I found it in /home/<user>/.local/share/gem/ruby/3.0.0/bin/jekyll. But what I need is the directory path, not the file, so: /home/<user>/.local/share/gem/ruby/3.0.0/bin/.
3. Add That to PATH
Figure out how to add a directory to your PATH environment variable. Instructions for that are too extensive to provide here, as it depends on your operating system and preferred shell, and the versions of the same. Search for that information elsewhere on Stackoverflow.
4. Restart Your Session
Close your terminal and open a new one. Make sure the directory was added to your path. Depending on how you set your PATH variable, you might need to log out of your session and log in again.