How to download and setup happy-birthday
Open terminal and run command
                                            git clone https://github.com/ProgrammerGaurav/happy-birthday.git
                                        
                                        git clone is used to create a copy or clone of happy-birthday repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with happy-birthday https://github.com/ProgrammerGaurav/happy-birthday/archive/master.zip
Or simply clone happy-birthday with SSH
                                            [email protected]:ProgrammerGaurav/happy-birthday.git                                    
                                    If you have some problems with happy-birthday
You may open issue on happy-birthday support forum (system) here: https://github.com/ProgrammerGaurav/happy-birthday/issuesSimilar to happy-birthday repositories
Here you may see happy-birthday alternatives and analogs
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