سلام من command  در ترمینال وارد کردم 

curl -sL https://firebase.tools | bash

و این خطا را میده

bash : The term 'bash' is not recognized as the name of a cmdlet, function, script file, or 
operable program. Check the spelling of the name, or if a path was included, verify that the    
path is correct and try again.
At line:1 char:35
+ curl -sL https://firebase.tools | bash
+                                   ~~~~
   + CategoryInfo          : ObjectNotFound: (bash:String) [], CommandNotFoundException        
   + FullyQualifiedErrorId : CommandNotFoundException

برای چی هست این خطا