`/usr/bin` is protected by system integrity protection and is not writeable by 
anybody even root. You need to run:

    sudo gem install -n /usr/local/bin sass

to install into a writeable directory

For generamba:

    sudo gem install -n /usr/local/bin generamba

I used the same for bundler.

sudo gem install -n /usr/local/bin bundler.

It works.

For CocoaPods: 

    sudo gem install -n /usr/local/bin cocoapods

I have the following class:

    @Builder @NoArgsConstructor
    public class ConsultationPointOfContact {
        private String fullName;
        private String phoneNumber;
        private String userLogin;   
    }

When the `@Builder` annotation exists, it is causing problems with the `@NoArgsConstructor`.

I am getting the error:

    Error:(11, 1) java: constructor ConsultationPointOfContact in class models.ConsultationPointOfContact cannot be applied to given types;
      required: no arguments
      found: java.lang.String,java.lang.String,java.lang.String
      reason: actual and formal argument lists differ in length

Lombok causing &quot;Actual and formal arguments lists differ in length error&quot;

I&#39;m looking for a comprehensive list of the valid selectors I can use to access child components / DOM elements via `@ViewChild` and `@ContentChild`.

Say I have a child `HelloComponent`:

I know I can add a template `#ref` and query for it, like so:

    &lt;hello #myHello&gt;&lt;/hello&gt;

    @ViewChild(&#39;myHello&#39;) myHello: HelloComponent;

Or I can look for that component directly (without the template `#ref`):

    @ViewChild(HelloComponent) myHello: HelloComponent;


In [this issue][1], it is mentioned that one can use the following selectors: 

&gt; we are currently supporting a sub-set of CSS selectors:  
* element selectors  
* attribute selectors (including values)  
* :not(...) pseudo-selector  
* combination of the above (including ,)

But when I tested these in Stackblitz to verify ([here&#39;s the link to that][2]), I couldn&#39;t actually get any of the first three to work. *(Check the console to see `undefined` for the types of selectors I couldn&#39;t get working. I&#39;m unsure if I&#39;m doing something wrong with those selectors or if the actual list is different.)*

So, which selectors will work? Also, is the list the same for `@ViewChild`, `@ContentChild`, `@ViewChildren`, and `@ContentChildren`?

  [1]: https://github.com/angular/angular/issues/21734
  [2]: https://stackblitz.com/edit/angular-ltsb4m

What are all the valid selectors for ViewChild and ContentChild?

I&#39;m on Mac and I&#39;m trying to install Sass using the command in terminal, &quot;sudo gem install sass&quot;.  I then enter my password, and everything works fine until this pops up,

&quot;ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don&#39;t have write permissions for the /usr/bin directory.&quot;

I do use sudo, but it still doesn&#39;t work, and it&#39;s one of those things that you can&#39;t give yourself read &amp; write permissions to.  Any ideas?

Thanks,

Wade

&quot;You don&#39;t have write permissions for the /usr/bin directory.&quot; when installing Sass using the Gem command

I'm on Mac and I'm trying to install Sass using the command in terminal, "sudo gem install sass". I then enter my password, and everything works fine until this pops up,
"ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /usr/bin directory."
I do use sudo, but it still doesn't work, and it's one of those things that you can't give yourself read &#x26; write permissions to. Any ideas?
Thanks,
Wade

I want to install carthage on my Mac OS using `brew install carthage` command. However, I get the following error:

    touch: /usr/local/Homebrew/.git/FETCH_HEAD: Permission denied
    touch: /usr/local/Homebrew/Library/Taps/caskroom/homebrew-cask/.git/FETCH_HEAD: Permission denied
    touch: /usr/local/Homebrew/Library/Taps/dart-lang/homebrew-dart/.git/FETCH_HEAD: Permission denied
    touch: /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/.git/FETCH_HEAD: Permission denied
    fatal: Unable to create &#39;/usr/local/Homebrew/.git/index.lock&#39;: Permission denied
    error: could not lock config file .git/config: Permission denied
    Warning: carthage 0.26.2 is already installed, it&#39;s just not linked.
    You can use `brew link carthage` to link this version.

I also get the following error when I used `sudo brew install carthage`:

    Error: Running Homebrew as root is extremely dangerous and no longer supported.
    As Homebrew does not drop privileges on installation you would be giving all
    build scripts full access to your system.

Can you let me know what is the problem. Thanks in advance. 

Error of &quot;error: could not lock config file .git/config: Permission denied&quot; occurs while installing Carthage

For reasons unknown to me, I haven&#39;t been able to update to the latest version of npm on macOS (it works fine on Windows). ***It displays no error, only &#39;updated 1 package&#39;.***

Using Node.js 8.11.1

    node -v
    v8.11.1

What version of npm do I have?

    $ npm -v
    5.6.0

I tried this... 

    $ npm i -g npm
    + npm@5.8.0
    updated 1 package in 7.37s

And it fails to update.

    $ npm -v
    5.6.0

Where is npm? 

    $ which npm
    /usr/local/bin/npm

So I try `brew`...

    brew install npm

And it fails... 

    $ npm -v
    5.6.0

***And then I tried this... ***

    npm install npm@latest -g
    + npm@5.8.0
    updated 1 package in 7.618s

And it fails... 

    npm -v
    5.6.0

-----
***With `sudo`:*** 

    sudo npm i -g npm
    + npm@5.8.0
    updated 1 package in 7.794s

And it fails... 

    npm -v
    5.6.0

***This also fails...***

    sudo npm install npm@latest -g

-----

I followed the [directions found on this Q&amp;A][2], completely removing npm and node from my system and reinstalling them from scratch, and it also fails to update.

----

Screenshot, per request:

[![enter image description here][3]][3]

-----

Close the terminal, and then re-open the terminal and running:

    $ npm -v
    5.6.0

-----

`sudo` twice: 

    $ sudo npm i -g npm
    + npm@5.8.0
    updated 1 package in 7.478s
    $ sudo npm i -g npm
    + npm@5.8.0
    updated 1 package in 7.434s

Also fails: 

    $ npm -v 
    5.6.0

-----

What did I miss? What&#39;s going on here?


  [1]: https://github.com/creationix/nvm/blob/master/README.md#installation
  [2]: https://stackoverflow.com/questions/11177954/how-do-i-completely-uninstall-node-js-and-reinstall-from-beginning-mac-os-x
  [3]: https://i.stack.imgur.com/h5poH.jpg

how to update npm on macOS

What I&#39;m trying to do here is to **make python3 as my default python.** Except the python 2.7 which automatically installed on mac, I installed **python3** with **homebrew**. This is the website that I&#39;m following. http://docs.python-guide.org/en/latest/starting/install3/osx/#install3-osx

I guess I followed every instruction well, got xcode freshly installed, Command line tools, and homebrew. But here&#39;s my little confusion occurs.

&gt; The script will explain what changes it will make and prompt you before the installation begins. Once you’ve installed Homebrew, insert the Homebrew directory at the top of your PATH environment variable. You can do this by adding the following line at the bottom of your ~/.profile file
&gt;
&gt; **export PATH=/usr/local/bin:/usr/local/sbin:$PATH**

I was really confused what this was, but I concluded that I should just add this following line at the bottom of ~/.profile file. So I opened the **~/.profile** file by **open .profile** in the terminal, and added following line at the bottom. And now it looks like this.

    export PATH=/usr/local/bin:/usr/local/sbin:$PATH
    # Setting PATH for Python 3.6
    # The original version is saved in .profile.pysave
    export PATH=/usr/local/bin:/usr/local/sbin:$PATH

And then I did **brew install python**, and was hoping to see **python3** when I do **python --version.**
But it just shows me **python 2.7.10.** I want my default python to be **python3** not 2.7

And I found a little clue from the website.

&gt; Do I have a Python 3 installed?

    $ python --version
    Python 3.6.4

&gt;  If you still see 2.7 ensure in **PATH /usr/local/bin/ takes pecedence over /usr/bin/**

Maybe it has to do something with **PATH?** Could someone explain in simple English what **PATH** exactly is and how I could make my default python to be python3 when I run **python --version** in the terminal?




Make python3 as my default python on Mac

# My goal
I am trying to install Python 2.7.5 and 3.6.5 side-by-side on my MBP with with pyenv. 

# `pyenv` Installation
Following https://stackoverflow.com/questions/18671253/how-can-i-use-homebrew-to-install-both-python-2-and-3-on-mac , I tried:


    $ pyenv install 3.6.5

Which erred with:

    python-build: use openssl from homebrew
    python-build: use readline from homebrew
    Downloading Python-3.6.5.tar.xz...
    -&gt; https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tar.xz
    Installing Python-3.6.5...
    python-build: use readline from homebrew
    
    BUILD FAILED (OS X 10.13.4 using python-build 20160602)
    
    Inspect or clean up the working tree at /var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709
    Results logged to /var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709.log
    
    Last 10 log lines:
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__main__.py&quot;, line 5, in &lt;module&gt;
        sys.exit(ensurepip._main())
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__init__.py&quot;, line 204, in _main
        default_pip=args.default_pip,
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__init__.py&quot;, line 117, in _bootstrap
        return _run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
      File &quot;/private/var/folders/d0/t8d3jjp161g2dyrd4k67ypc80000gn/T/python-build.20180426091253.34709/Python-3.6.5/Lib/ensurepip/__init__.py&quot;, line 27, in _run_pip
        import pip
    zipimport.ZipImportError: can&#39;t decompress data; zlib not available
    make: *** [install] Error 1

# What have I tried
* Installing zlib: `brew install zlib`

# My question
How can I install multiple Python environment with `pyenv` on MBP?

pyenv zlib error on MacOS:

I am relatively new to Python and trying to implement a Multiprocessing module for my for loop.

I have an array of Image url&#39;s stored in img_urls which I need to download and apply some Google vision.

    if __name__ == &#39;__main__&#39;:

        img_urls = [ALL_MY_Image_URLS]
        runAll(img_urls)
        print(&quot;--- %s seconds ---&quot; % (time.time() - start_time)) 

This is my runAll() method

    def runAll(img_urls):
        num_cores = multiprocessing.cpu_count()
    
        print(&quot;Image URLS  {}&quot;,len(img_urls))
        if len(img_urls) &gt; 2:
            numberOfImages = 0
        else:
            numberOfImages = 1
    
        start_timeProcess = time.time()
    
        pool = multiprocessing.Pool()
        pool.map(annotate,img_urls)
        end_timeProcess = time.time()
        print(&#39;\n Time to complete &#39;, end_timeProcess-start_timeProcess)
    
        print(full_matching_pages)


    def annotate(img_path):
        file =  requests.get(img_path).content
        print(&quot;file is&quot;,file)
        &quot;&quot;&quot;Returns web annotations given the path to an image.&quot;&quot;&quot;
        print(&#39;Process Working under &#39;,os.getpid())
        image = types.Image(content=file)
        web_detection = vision_client.web_detection(image=image).web_detection
        report(web_detection)


I am getting this as the warning when I run it and python crashes

    objc[67570]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
    objc[67570]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
    objc[67567]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
    objc[67567]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
    objc[67568]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
    objc[67568]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
    objc[67569]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
    objc[67569]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
    objc[67571]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
    objc[67571]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
    objc[67572]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
    objc[67572]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.

 

Multiprocessing causes Python to crash and gives an error may have been in progress in another thread when fork() was called

What I&#39;m trying to achieve should be rather straightforward although Powershell is trying to make it hard.

I want to display the full path of files, some with Arabic, Chinese, Japanese and Russian characters in their names

I always get some undecipherable output, such as the one shown below
[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/ghy94.png


The output seen in console is being consumed as is by another script.
The output contains *?* instead of the actual characters.

The command executed is 

    (Get-ChildItem -Recurse -Path &quot;D:\test&quot; -Include *unicode* | Get-ChildItem -Recurse).FullName

Is there any easy way to launch powershell (via command line or in any fashion that can be written into a script) such that the output is seen correctly.

P.S. I&#39;ve gone through many similar questions on Stack Overflow but none of them have much input other than calling it a Windows Console Subsystem issue.

Displaying Unicode in Powershell

Apparently, none of the Flutter commands are working in the terminal of Android Studio which I believe I am trying to run it at the root of my project.

Output:

    bash: flutter: command not found





Flutter command not found

To note, I&#39;m on Oh-My-Zsh and git 2.17. Whenever I type in git branch, instead of showing me the branches of my git, it shows something like this:

    ~
    ~
    ~
    ~
    ~
    (END)

I can quit this by pressing &#39;q&#39; on my keyboard, but I&#39;m still confused as to why this is appearing.

git branch ~(END) on terminal?

Why is there a message when I import pygame, it prints the version and welcome message. The message reads

    &quot;pygame 1.9.4 Hello from the pygame community.
     https://www.pygame.org/contribute.html&quot; 

How can I disable this message?

Why when import pygame, it prints the version and welcome message. How delete it?

I just created a new Angular project using the new Angular CLI 6.0, but I need to add Sass compilation to my project. I&#39;m aware you can set a flag when you create a project, but my project is already created and work has been done.

The new configuration file that gets generated with the new Angular CLI is now called `angular.json` rather than `angular-cli.json`. The scheme for the file is also different, with new properties.

In the old `angular-cli.json` there is a section where you can set the `stylExt` like so,
 
    &quot;defaults&quot;: {
        &quot;styleExt&quot;: &quot;scss&quot;
    }

but I&#39;m not sure where exactly to put this, as after the `&quot;test&quot;` and `&quot;lint&quot;` properties, gives a lint error of: 

`Matches multiple schemas when only one must validate.` 

and building produces: 

`Schema validation failed with the following errors:
  Data path &quot;[&#39;defaults&#39;]&quot; should NOT have additional properties(styleExt).`

Looking at [CLI&#39;s docs][1] I&#39;m not seeing anything that would indicate where to put `&quot;styleExt&quot;`.

I&#39;ve seen other answers advising: `ng set defaults.styleExt scss` which throws`get/set have been deprecated in favor of the config command.`. 

I tried `ng config set defaults.styleExt scss` and `npm config set defaults.styleExt scss` with the former throwing an error and the latter apparently having no effect on the file, but without error.




  [1]: https://github.com/angular/angular-cli/wiki/angular-workspace

How do I add Sass compilation in Angular CLI 6: angular.json?

Consider the following SCSS:

    $color-black: #000000;

    body {
        --color: $color-black;
    }


When it is compiled with node-sass **version 4.7.2**, it produces following CSS:

    body {
        --color: #000000; 
    }

When I compile the same SCSS with version **4.8.3 or higher**, it produces following:

    body {
        --color: $color-black; 
    }

**What am I missing?** I checked release logs, but could not found anything useful. Also, I wonder if this change is genuine why does it have only minor version change? Should it not be a major release?

Also, **what is my alternative?** Should I use **Interpolation**?

Unable to set SCSS variable to CSS variable?

I am new to React and am using the npm package Material UI icons (https://www.npmjs.com/package/@material-ui/icons) and displaying icons within a React component as such:

Importing: 

    import KeyboardArrowRightIcon from &#39;material-ui/svg-icons/hardware/keyboard-arrow-right&#39;;

and rendering:

    readMoreLink={&lt;a href={someUrl} &gt;Read more &lt;KeyboardArrowRightIcon /&gt;&lt;/a&gt;}

However, since `KeyboardArrowRightIcon` is an SVG provided by the npm package, it comes with it&#39;s own fill colour:

Eg: `&lt;svg viewBox=&quot;0 0 24 24&quot; style=&quot;display: inline-block; color: rgba(0, 0, 0, 0.54);...`

I know I can override this colour by having a style attribute within the element, eg:

    &lt;KeyboardArrowRightIcon style={{ fill: &#39;#0072ea&#39; }} /&gt;

But is there anyway to make this a SCSS variable (`style={{ fill: $link-color }}`)?

I worry if the link colour changes in the style sheet someone will have to hunt down all these hard coded instances later.


Is there a way I can overwrite the colour the Material UI Icons npm package provides in React?

*I&#39;m a newbie so please include links to URLs or explain terminologies so I can understand.* 

I&#39;ve managed to install &#39;npm&#39; on a Mac OS (10.13.3) via the terminal, and have installed some packages like SASS using it. 

I&#39;m now trying to install [sass-mq][1] using npm. I think I&#39;ve managed to install it, but I&#39;d like a second opinion on what I might have done that was incomplete, or wrong while doing it. 

**Initially, following the instructions on the sass-mq Github page, I was trying to use:** 

    npm install sass-mq --save

**which gave me this error:** 

    npm WARN saveError ENOENT: no such file or directory, open &#39;/Users/&lt;username&gt;/package.json&#39;
        npm WARN enoent ENOENT: no such file or directory, open &#39;/Users/&lt;username&gt;/package.json&#39;
        npm WARN &lt;username&gt; No description
        npm WARN &lt;username&gt; No repository field.
        npm WARN &lt;username&gt; No README data
        npm WARN &lt;username&gt; No license field.
        
        + sass-mq@5.0.0
        updated 1 package and audited 1 package in 1.67s
        found 0 vulnerabilities

**Looking around, I realised I&#39;m meant to be using**

    npm init

**..before typing my &#39;install sass-mq --save&#39; command.** 

Cool, done that. Next error was this: 

    package name: (nikhil) sass-mq
    version: (1.0.0) 
    description: 
    entry point: (index.js) 
    test command: 
    git repository: 
    keywords: 
    author: 
    license: (ISC) 
    About to write to /Users/nikhil/package.json:
    
    {
      &quot;name&quot;: &quot;sass-mq&quot;,
      &quot;version&quot;: &quot;1.0.0&quot;,
      &quot;description&quot;: &quot;&quot;,
      &quot;main&quot;: &quot;index.js&quot;,
      &quot;dependencies&quot;: {
        &quot;sass-mq&quot;: &quot;^5.0.0&quot;
      },
      &quot;devDependencies&quot;: {},
      &quot;scripts&quot;: {
        &quot;test&quot;: &quot;echo \&quot;Error: no test specified\&quot; &amp;&amp; exit 1&quot;
      },
      &quot;author&quot;: &quot;&quot;,
      &quot;license&quot;: &quot;ISC&quot;
    }
    
    
    Is this OK? (yes) 
    darwin:~ nikhil$ npm install sass-mq --save
    npm ERR! code ENOSELF
    npm ERR! Refusing to install package with name &quot;sass-mq&quot; under a package
    **npm ERR! also called &quot;sass-mq&quot;. Did you name your project the same
    npm ERR! as the dependency you&#39;re installing?**

I think this is saying that I can&#39;t use &#39;sass-mq&#39; (which is the name of the package, as the name of the local package (?) I&#39;m installing into on my local machine. [Some more info here.][2]

So I simply tried this: 

    **package name: (sass-mq) media-queries-nikhil**
    version: (1.0.0) 
    description: 
    git repository: 
    keywords: 
    author: 
    license: (ISC) 
    About to write to /Users/nikhil/package.json:

and it seems to have worked OK.

**My question is: Is this the right way I should have done this? How do you usually do this?** 

Also, I get these warnings - is it OK to ignore them?

    npm WARN media-queries-nikhil@1.0.0 No description
    npm WARN media-queries-nikhil@1.0.0 No repository field.

I&#39;m creating this question in part so others like me looking for the answer to a similar issue can find an explanation, instead of just commands they need to fix their issue. I found a few similar question-threads, but none that actually explained what was happening and why. 

Thanks for reading, I really appreciate any help with this :) 

  [1]: https://github.com/sass-mq/sass-mq
  [2]: https://docs.npmjs.com/cli/install#limitations-of-npms-install-algorithm

Solving the &#39;npm WARN saveError ENOENT: no such file or directory, open &#39;/Users/&lt;username&gt;/package.json&#39;&#39; error

I do already have SCSS variables defined in `src/styles/settings/_variables.scss` and I am importing them into `src/styles.scss`, but still these variables aren&#39;t available for every single component.

Is there any way to make a global file which holds all SCSS variables for the rest of my components? Because writing `@import` in every single component `.scss` file it is very frustrating, especially if I have many nested components.

I know, there is a lot of similar questions, but it seems like they&#39;re all outdated and do not relate to the recent versions of Angular.

I use Angular 7.3 with CLI.

Global scss variables for Angular components without importing them everytime

below is what I need to do.

 &gt; To run the specs, you&#39;ll need to install RSpec. First, run `gem install bundler` in the root directory of your project. Then, run `bundle install`. To run a single spec file, run a command like this: `bundle exec rspec spec/00_hello_spec.rb`. To run all of the specs at once, run `bundle exec rspec`.

So, I typed `gem install bundler` in Terminal, and got the error:

 &gt; You don&#39;t have write permissions for the /Library/Ruby/Gems/2.3.0 directory.

and this was in the project file in atom

```
source &quot;https://rubygems.org&quot;
gem &quot;rspec&quot;, &quot;~&gt; 3.2.0&quot;
```

My question is:

It seems like terminal is giving me the response because I&#39;m not supposed to change anything on ruby, and I need to `bundle install` inside of atom? Could anyone tell me how to use atom or run anything in atom?

You don&#39;t have write permissions for the /Library/Ruby/Gems/2.3.0 directory. (mac user)

I&#39;m executing the following script:

    gem install rdoc --no-document
    gem install bundle
    bundle

output:

    + gem install rdoc --no-document
    Successfully installed rdoc-6.1.1
    1 gem installed
    + gem install bundle
    Successfully installed bundle-0.0.1
    Parsing documentation for bundle-0.0.1
    Done installing documentation for bundle after 2 seconds
    1 gem installed
    1 gem installed
    + bundle install
    /usr/lib/ruby/2.5.0/rubygems.rb:289:in `find_spec_for_exe&#39;: can&#39;t find gem bundler (&gt;= 0.a) with executable bundle (Gem::GemNotFoundException)
    	from /usr/lib/ruby/2.5.0/rubygems.rb:308:in `activate_bin_path&#39;
    	from /srv/myuser/.gem/ruby/2.5.0/bin/bundle:23:in `&lt;main&gt;&#39;

I&#39;ve added `/srv/myuser/.gem/ruby/2.5.0/bin` to my path so I was able to install gems.

the `gem env` shows

    RubyGems Environment:
      - RUBYGEMS VERSION: 2.7.7
      - RUBY VERSION: 2.5.1 (2018-03-29 patchlevel 57) [x86_64-linux]
      - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/2.5.0
      - USER INSTALLATION DIRECTORY: /srv/myuser/.gem/ruby/2.5.0
      - RUBY EXECUTABLE: /usr/bin/ruby
      - EXECUTABLE DIRECTORY: /usr/bin
      - SPEC CACHE DIRECTORY: /srv/myuser/.gem/specs
      - SYSTEM CONFIGURATION DIRECTORY: /etc
      - RUBYGEMS PLATFORMS:
        - ruby
        - x86_64-linux
      - GEM PATHS:
         - /usr/lib/ruby/gems/2.5.0
         - /srv/myuser/.gem/ruby/2.5.0
      - GEM CONFIGURATION:
         - :update_sources =&gt; true
         - :verbose =&gt; true
         - :backtrace =&gt; false
         - :bulk_threshold =&gt; 1000
         - &quot;gem&quot; =&gt; &quot;--user-install&quot;
      - REMOTE SOURCES:
         - https://rubygems.org/
      - SHELL PATH:
         - /usr/local/sbin
         - /usr/local/bin
         - /usr/bin

`gem list` shows the installed gems.
I can also find bundle when I perform:

    ls -ltrah /srv/myuser/.gem/ruby/2.5.0/bin

I&#39;ve also tried to install bundler but that didn&#39;t also help.
What am I doing wrong?

`gem which bundle` is showing nothing.`gem spec bundle` is showing it.

Update: I tried to install bundler before running bundle but the same issue appears while:

`gem list bundle` shows

    bundle (0.0.1)
    bundler (2.0.1)



Bundler: can&#39;t find gem bundler (&gt;= 0.a) with executable bundle (Gem::GemNotFoundException) during bundle install with gem

I was trying to run `brew doctor` but system popped up error of

&gt; /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in
&gt; `require&#39;: cannot load such file --
&gt; active_support/core_ext/object/blank (LoadError)

Searched online and another post suggested to just &quot;gem install activesupport&quot; but then I ran into error of:

    ERROR:  Error installing activesupport:
    	i18n requires Ruby version &gt;= 2.3.0.

I also tried to rvm install ruby-2.3.0 but the same error popped again

    [2019-02-26 10:07:41] requirements_osx_brew_libs_install
    requirements_osx_brew_libs_install ()  { 
        brew install &quot;$@&quot; --force || { 
            \typeset ret=$?;
            requirements_osx_brew_libs_error &quot;installation&quot;;
            return $ret
        } } current path: /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib
    PATH=/Users/{user_name}/.aw/pex_resources/scripts/binaries:/usr/local/sbin:/Users/fengjiao/.rbenv/shims:/Users/{user_name}/.nvm/v0.10.32/bin:/Users/fengjiao/bin:/usr/local/sbin:/usr/local/bin:/Users/{user_name}/.rbenv/shims:/Users/{user_name}/.nvm/v0.10.32/bin:/Users/{user_name}/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/munki:/opt/X11/bin:/Users/fengjiao/gocode/bin:/Users/{user_name}/.rvm/bin
    command(10): requirements_osx_brew_libs_install autoconf automake
    libtool pkg-config coreutils libyaml readline libksba openssl@1.1
    ++ brew install autoconf automake libtool pkg-config coreutils libyaml readline libksba openssl@1.1 --force
    /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in
    `require&#39;: cannot load such file --
    active_support/core_ext/object/blank (LoadError) 	from
    /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in
    `require&#39; 	from /usr/local/Homebrew/Library/Homebrew/global.rb:10:in
    `&lt;top (required)&gt;&#39; 	from
    /usr/local/Homebrew/Library/Homebrew/brew.rb:21:in `require_relative&#39;
    	from /usr/local/Homebrew/Library/Homebrew/brew.rb:21:in `&lt;main&gt;&#39;
    ++ typeset ret=1
    ++ requirements_osx_brew_libs_error installation
    ++ rvm_warn &#39;There were package installation errors, make sure to read the log.
    
    Try `brew tap --repair` and make sure `brew doctor` looks reasonable.

Content Type	Original Author	Original Content on Stackoverflow
Question	Wade M.	View Question on Stackoverflow
Solution 1 - Macos	Alan Birtles	View Answer on Stackoverflow
Solution 2 - Macos	Mihail Salari	View Answer on Stackoverflow
Solution 3 - Macos	Amit	View Answer on Stackoverflow
Solution 4 - Macos	Americana American	View Answer on Stackoverflow

"You don't have write permissions for the /usr/bin directory." when installing Sass using the Gem command

Macos Problem Overview

Macos Solutions

Solution 1 - Macos

Solution 2 - Macos

Solution 3 - Macos

Solution 4 - Macos

What are all the valid selectors for ViewChild and ContentChild?

Lombok causing "Actual and formal arguments lists differ in length error"

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