Code Self Study Forum

Finding the dart command after installing Flutter on Ubuntu 20.04

I wanted to experiment with Dart. I had installed Flutter and the Dart installation instructions said that if you had Flutter installed, you don’t need to install Dart separately.

My computer couldn’t find the dart command though:

$ dart
zsh: command not found: dart

Running flutter doctor -v showed that Dart is installed:

$ flutter doctor -v
[✓] Flutter (Channel beta, 1.20.0-7.3.pre, on Linux, locale en_US.UTF-8)
    • Flutter version 1.20.0-7.3.pre at /home/username/snap/flutter/common/flutter
    • Framework revision e606910f28 (33 hours ago), 2020-07-28 16:06:37 -0700
    • Engine revision ac95267aef
    • Dart version 2.9.0 (build 2.9.0-21.10.beta)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.1)
    • Android SDK at /home/username/Android/Sdk
    • Platform android-30, build-tools 30.0.1
    • Java binary at: /home/username/android-studio/jre/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • CHROME_EXECUTABLE = /usr/bin/chromium-browser

[✓] Android Studio (version 4.0)
    • Android Studio at /home/username/android-studio
    • Flutter plugin version 47.1.2
    • Dart plugin version 193.7361
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] Connected device (2 available)
    • Web Server (web) • web-server • web-javascript • Flutter Tools
    • Chrome (web)     • chrome     • web-javascript • Chromium 84.0.4147.89 snap

• No issues found!

Eventually, I found it ~/snap/flutter/common/flutter/bin:

$ ~/snap/flutter/common/flutter/bin/dart --version
Dart SDK version: 2.9.0-21.10.beta (beta) (Tue Jul 21 10:46:30 2020 +0200) on "linux_x64"

To fix it, I added a symlink to my ~/bin directory which is on my path:

$ cd ~/bin
$ ln -s ~/snap/flutter/common/flutter/bin/dart .

Now it works:

$ dart --version
Dart SDK version: 2.9.0-21.10.beta (beta) (Tue Jul 21 10:46:30 2020 +0200) on "linux_x64"

I’m posting this here, because I couldn’t find an answer online, so maybe someone will find this page in a search engine.

Edit: to find the pub command:

$ ~/flutter/bin/cache/dart-sdk/bin/pub --version

I fixed it the same way:

$ cd ~/bin
$ ln -s ~/flutter/bin/cache/dart-sdk/bin/pub .

After that I was able to download stagehand:

$ pub global activate stagehand

Be sure to read the output from that command, because it has instructions for putting stagehand on the path:

Warning: Pub installs executables into $HOME/.pub-cache/bin, which is not on your path.
You can fix that by adding this to your shell's config file (.bashrc, .bash_profile, etc.):
  export PATH="$PATH":"$HOME/.pub-cache/bin"

Edit 2: dart2native is in ~/snap/flutter/common/flutter/bin/cache/dart-sdk/bin/dart2native

I don’t know if everything works yet, but that might help people get at least part of the way there. Leave a comment below if you know a better method.