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The easiest way to add a new path to $PATH (the environment variable) is with the export command. In this example we’ll add “~/opt/bin” to the user PATH with export:
export PATH=$PATH:~/opt/bin
You can run that directly from the command line, then check the $PATH with echo to show that it has been added like so:
echo $PATH
Open your terminal and run the following command to open your .zshrc file:
nano ~/.zshrc
In the .zshrc file, add the following line at the end of the file:
export PATH="$HOME/.composer/vendor/bin:$PATH"
Save and exit the .zshrc file by pressing Ctrl + X, then Y, then Enter.
Run the following command to reload your .zshrc file:
source ~/.zshrc
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Open your terminal and run the following command to open your .zshrc file:
nano ~/.zshrc
In the .zshrc file, add the following line at the end of the file:
export PATH="$HOME/.composer/vendor/bin:$PATH"
Save and exit the .zshrc file by pressing Ctrl + X, then Y, then Enter.
Run the following command to reload your .zshrc file:
source ~/.zshrc
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sudo nano /etc/paths
https://www.architectryan.com/2012/10/02/add-to-the-path-on-mac-os-x-mountain-lion/