Скачать или смотреть How to Solve bcrypt Installation Issues on Ubuntu 20.04 for Ruby on Rails

Struggling to install the `bcrypt` gem on Ubuntu 20.04? This guide provides step-by-step instructions to resolve the issue and get your Ruby on Rails project running smoothly.
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Solving bcrypt Installation Problems on Ubuntu 20.04

If you're encountering issues while trying to install the bcrypt gem on your Ubuntu 20.04 system for a Ruby on Rails project, you're not alone. Many developers face similar challenges, particularly when dealing with native extensions needed for certain gems. This guide will guide you through the steps to troubleshoot and fix the installation problem effectively.

Understanding the Problem

The issue arises when you attempt to run bundle install in your Ruby on Rails project and the bcrypt gem fails to install. In specific situations, the installation process fails with an error indicating that a required command (/usr/bin/mkdir) could not be found on your system.

Example Error Log

Here’s a snippet from a typical error log you might encounter:

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This log clearly states that while attempting to compile native extensions, the installation process is unable to locate the mkdir command at the expected path. This situation often traps developers, causing unnecessary delays.

Solution Steps

Fortunately, this problem can be resolved quite simply. Below are the structured steps to fix the bcrypt installation issue:

Step 1: Check the Current Path

The first thing you need to verify is whether the mkdir command is present in the expected directory. On a Debian-based system, it should be located in /bin/mkdir rather than /usr/bin/mkdir.

Step 2: Create a Symlink

If the command is indeed in /bin/, you can create a symbolic link to resolve the discrepancy. The steps are as follows:

Open Your Terminal:

You can do this by pressing Ctrl + Alt + T on your keyboard.

Run the Symlink Command:

[[See Video to Reveal this Text or Code Snippet]]

This command creates a link at /usr/bin/mkdir that points to the actual mkdir command located in /bin/.

Step 3: Install Required Packages

If you haven’t already done this, ensure you have installed the necessary development packages to compile native extensions:

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Step 4: Retry the Installation

Once you’ve set up the symlink and installed the required packages, navigate back to your Rails project directory in the terminal and run:

[[See Video to Reveal this Text or Code Snippet]]

You should now be able to install the bcrypt gem without any further issues.

Conclusion

Installing the bcrypt gem can be a straightforward process once you have diagnosed and addressed the underlying cause of the installation failure. By creating a symbolic link to ensure that the installation script finds the mkdir command where it expects to, you can successfully add bcrypt to your Ruby on Rails project.

If you continue experiencing issues, it may be helpful to consult additional community forums or the official Ruby on Rails documentation for further support.



By following this guide, you should be able to tackle any bcrypt installation mishaps on Ubuntu 20.04 confidently. Happy coding!