ERROR: While executing gem - ruby

Found today I couldn't get my 'jekyll server' to start, so I preceded to reinstall 'jekyll' but I get this error...
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
Then I tried 'sudo gem install jekyll' and it worked!
Can anyone explain what's going on?
Thanks!

Use rbenv to setup a ruby binary that is in your home dir (a writable path).
You get that error because you lack write permissions to the System dir. Don't try to get write perms there - that's just asking for trouble. Instead, install a ruby version manager.
rbenv is linked above. Some like RVM. You can google for the arguments that pro/con each. rbenv is "more unix-like" and that is a good reason on its own.

It is installing system wide , you can force a single user install as follow
gem install jekyll --user-install

Related

Trying to put bundle in PATH

I'm working on a Ruby project that requires the use of a few gems. I'm a bit confused, since I thought I already had bundler installed on my Mac. I tried installing it just now and got the following error:
Leias-MacBook-Pro:spec leia$ gem install bundler
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.
I then tried using --user-install, a trick I picked up from browsing Stack Overflow.
Leias-MacBook-Pro:spec leia$ gem install bundler --user-install
WARNING: You don't have /Users/leia/.gem/ruby/2.3.0/bin in your PATH, gem executables will not run.
Successfully installed bundler-2.0.2
Parsing documentation for bundler-2.0.2
Done installing documentation for bundler after 5 seconds
1 gem installed
Now, I kind of need the gem executables to run, so I opened my .bash_profile and dropped the following code in:
export PATH=/Users/leia/.gem/ruby/2.3.0/bin:$PATH
But no matter how I try to fix it, bundle still won't run. The gem I'm installing is rspec, and I definitely need to be able to run those executables. Am I doing something wrong here? I've tried to follow tutorials and Google similar issues, but I can't figure out what the problem is. Any pointers or suggestions?

Error installing SASS gem - don't have permissions

I'm not well versed in terminal, but I'll try my best to make this as clear and concise as I can.
I'm trying to install SASS and get the following errors:
When using gem install sass I get .
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.3.0 directory.
When using sudo gem install sass I get .
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /usr/bin directory.
I have Xcode installed and I have agreed to the terms.
I even tried updating my Ruby, but terminal tells me I already have the most updated version.
ruby 2.3.3p222 (2016-11-21 revision 56859) [universal.x86_64-darwin17]
The worst part of all of this is that when I navigate to my Ruby/Gems/2.3.0/gems directory, there is a sass-3.5.5 folder!!! (linked image to follow)
Ruby directory path to sass folder
I try running sass -v and get -bash: sass: command not found
I feel like I've tried everything that I can think of or find online. I'm at a loss and definitely need some help.
The issue can be fixed by installing RVM or Rbenv for managing ruby versions and gems.
Also, FilePermissionError can be fixed using the -n parameter
sudo gem install sass -n /usr/bin
I prefer not touching sudo command, so I managed to solve this issue by referring to SASS home page:
If you use Node.js, you can also install Sass using npm by running
npm install -g sass
If you find it helpful, kindly upvote or leave comment so that I know it can solve your issues too.
Or one could update the directory for where gems are installed.
Please see the origional answer here: https://stackoverflow.com/a/2619731/3302764
export GEM_HOME=~/.gem
export GEM_PATH=~/.gem

why is this sass command giving me an error

I am trying to learn sass so I can develop my front end skills a little bit more because that is what I hope to be some day. The only thing is I can't get sass to work.
Whenever I run the sass --watch . command it returns this error.
>>> Sass is watching for changes. Press Ctrl-C to stop.
write ./test.css
LoadError: no such file to load -- rb-fsevent
Use --trace for backtrace.
I did a bit of research on this error and it was suggested on this site to just simply install the rb-fsevent file that is missing so I ran the gem install rb-fsevent command and then got this error.
Fetching: rb-fsevent-0.9.4.gem (100%)
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
so I did a bit of research on THIS error and it was suggested agin on this site to just run the install with sudo. So i did just that I didn't get an error so i was quite excited because I have been fighting with this for a while so i want back to the start of this question and ran the --watch command and got the same exact error. Can anyone help me fix this?
Your first error is because Ruby can't load the rb-fsevent gem. This could be because the gem is not installed. Trying to install the gem was a good idea.
Your second error is because you are trying to install the gem to a directory that you do not have permissions for. Using sudo to do the install is an acceptable solution. You can also do gem install --user-install to install to your home directory.
You are still getting the first error because even though the gem is installed, Ruby cannot load it. This could be because sudo installed the gem with the wrong permissions, or installed it to the wrong location, or Ruby is looking for it in the wrong location.
Thus your solution would be to
Locate the gem files you installed
Check that their permissions allow you to read them
Check ruby -e 'p $LOAD_PATH' to see if Ruby is looking in the right place for the gem

Jekyll - command not found

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.

RubyGems installation errors both when using 'sudo' and not using sudo

I have a machine that is running Ubuntu Hardy, which provides its own RubyGems package. Unfortunately that version of RubyGems (1.1.1) is too old to do anything useful with, so I decided to manually update RubyGems to the current version (1.3.6). That part went smoothly, and if I do gem -v, I get 1.3.6 which is expected. The problem is when I try to do: sudo gem install rack, it returns this error:
ERROR: While executing gem ... (Errno::EACCES)
Permission denied - /home/username/.gem
Usually when I install gems as root, it knows to install it into /usr/lib/ruby/gems, so why is it checking my home directory at all? Another quirk is when I do gem install rack (not as root), it says:
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions into the /usr/lib/ruby/gems/1.8 directory.
which is where I want it to go. I've already tried clearing source_caches, trying different versions of RubyGems (1.3.5), forcing installation into /usr/lib with -i to no avail. Any ideas on why RubyGems is so insistent on checking my /home directory when installing as root?
Sounds like it could be a path issue coupled with having multiple versions installed.
Any difference in output between:
sudo gem env
and
gem env
Try running:
gem environment
and checking the values for the GEM PATH. More info at http://docs.rubygems.org/read/chapter/10#page31
I was running into the same problem myself on Fedora 15, so I ran 'gem install' with the '--backtrace' option to see what was going on.
It turned out it was failing at /usr/lib/ruby/site_ruby/1.8/rubygems/doc_manager.rb:203 where it tried to chdir to the directory it had previously stored (the home directory of the user I was running sudo as)
I didn't extensively debug to see what the underlying cause was, just rather used a quick workaround so I could continue moving forward. The workaround was simply to cd to the root directory, eg cd /, before running the gem install command.
Hope this helps / solves your issue.
Woulda been easier to su (password) then chmod 755 /usr/lib/ruby/gems/1.8

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