Installing flyctl
Flyctl is a command-line utility that lets you work with Fly, from creating your account to deploying your applications. It runs on your local device so you'll want to install the version that's appropriate for your operating system:
macOS
If you have the Homebrew package manager installed, flyctl can be installed in /usr/local (or wherever Brew is configured to keep installed applications) by running:
brew install superfly/tap/flyctl
If you do not have Homebrew installed, you can download and run the install script:
curl -L https://fly.io/install.sh | sh
This will install flyctl in $HOME/.fly/bin and it will instruct you to add that directory to your path.
Set the environment variable FLYCTL_INSTALL to set the directory for flyctl to be installed in and it will be installed a bin directory of the FLYCTL_INSTALL directory. For example, if you want to install flyctl in /usr/local/bin, use:
curl -L https://fly.io/install.sh | FLYCTL_INSTALL=/usr/local sh
Linux
Run the install script:
curl -L https://fly.io/install.sh | sh
This will install flyctl in $HOME/.fly/bin and it will instruct you to add that directory to your path.
Set the environment variable FLYCTL_INSTALL to set the directory for flyctl to be installed in and it will be installed a bin directory of the FLYCTL_INSTALL directory. For example, if you want to install flyctl in /usr/local/bin, use:
curl -L https://fly.io/install.sh | FLYCTL_INSTALL=/usr/local sh
Windows
Run the Powershell install script:
iwr https://fly.io/install.ps1 | iex
If your Windows installation has never been exposed to Internet Explorer, this command may produce an error:
iwr : The response content cannot be parsed because the Internet Explorer engine is not available, or Internet Explorer's first-launch configuration is not complete. Specify the UseBasicParsing parameter and try again.
In this case, run the command:
iwr https://fly.io/install.ps1 -useBasicParsing | iex
And you'll be good to go.