If you are using zsh, you need to follow the below steps in mac.
Read moreWhere is not recognized as an internal or external command flutter?
Go to My Computer Properties > Advance System Setting > Environment Variables . In this way, you can solve ‘flutter’ is not recognized as an internal or external command error in Windows OS.
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Getting Started
Read moreWhere is .zshrc file Mac?
zshrc file will be located in the users home directory, or ~/ , and this user . zshrc file is where you’d place customizations to the z shell. If you have not yet manually created a . zshrc file, the file will not exist by default.
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