Fix Bundler Command Not Found

Fix Bundler Command Not Found | Generated by AI

Home 2025.10

Understanding the Issue

Your gem install jekyll bundler succeeded (it installed 30 gems, including Bundler 2.7.2), but the bundle command isn’t found. This is a common PATH/environment issue on Ubuntu/Debian systems after a system-wide sudo gem install. Gems install binaries to /usr/local/bin (or similar), but your shell’s $PATH might not include it, or the change hasn’t propagated (e.g., need to reload your profile).

The system’s suggestion to apt install ruby-bundler would install an older version (2.4.20) via apt, which could conflict with your gem-installed Bundler 2.7.2—avoid that for now. Same for snap; it might isolate Ruby in a way that breaks gem paths.

Quick Fix: Verify and Use the Installed Bundler

Check where bundle is installed:
```
gem environment
```
- Look for “EXECUTABLE DIRECTORY” (likely /usr/local/bin). Note that path.

Locate and test bundle directly:

which bundle  # If nothing, try: find /usr/local -name bundle 2>/dev/null
/usr/local/bin/bundle --version  # Should output "Bundler version 2.7.2"

If it works, great! Use the full path for now: /usr/local/bin/bundle install

Run your Jekyll setup with the full path:
- In ~/projects/blog-source (assuming it has a Gemfile):
```
/usr/local/bin/bundle install
/usr/local/bin/bundle exec jekyll serve
```
- This should install Jekyll dependencies and start the server (usually at http://127.0.0.1:4000).

Permanent Fix: Update Your PATH

If /usr/local/bin isn’t in your $PATH, add it:

Edit ~/.bashrc (or ~/.profile for login shells):
```
nano ~/.bashrc
```
Add this line at the end:
```
export PATH="/usr/local/bin:$PATH"
```
Reload your shell:
```
source ~/.bashrc
```

Verify:

echo $PATH  # Should now include /usr/local/bin
bundle --version  # Should work without full path

Now retry:

bundle install
bundle exec jekyll serve

If That Doesn’t Work

Permission issues? (Rare, but sudo can cause them.) Reinstall without sudo (user-local install):
```
gem install --user-install bundler jekyll
```
Then add export PATH="$HOME/.local/share/gem/ruby/*/bin:$PATH" to ~/.bashrc (adjust path from gem environment).
Ruby version mismatch? Check with ruby --version. If it’s system Ruby (e.g., 2.7.x), consider Ruby version managers like rbenv (install via curl -fsSL https://github.com/rbenv/rbenv-installer/raw/HEAD/bin/rbenv-installer | bash, then follow setup). This avoids system conflicts long-term.
Proxy still in play? If your env vars (http_proxy, etc.) are set, Bundler should inherit them—just ensure they’re exported before running.

Your setup should be running smoothly after the PATH tweak. If you hit errors (e.g., share gem environment output), paste them for more targeted help!

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