Fix the 'gcloud command not found' error in macOS

1. Download google-cloud-sdk.tar.gz, and unzip it. Place the unzipped folder whenever you want (I've place it in the macOS Applications folder).

2. Go to the folder:

terminal
cd /Applications/google-cloud-sdk

3. Install the package:

terminal
./install.sh

4. While running the installation:

terminal
Modify profile to update your $PATH and enable shell command completion?

Do you want to continue (Y/n)?  

y

5. By default, the executable will modify the /Users/Erik/.bash_profile file, but after installation, if you execute gcloud --version and the command is not found, reinstall the package and replace /Users/Erik/.bash_profile with ~/.profile.

6. Restart the terminal.