Linux/MacOSX : Search for files by filename and extension with find command

Jotting down these useful commands here for future references, never know when I might need to recall them again on how to search for files by filename or extension.

To search current directory and directories under the current directory for files with .go extension :

>find ~ -type f | grep "\.go$"

Sample output :

/Users/admin/variables.go

/Users/admin/writebyte.go

/Users/admin/writerune.go

/Users/admin/writestring.go

/Users/admin/x509.go

If need to search for more than 1 type of file extension, use grep -E command to combine the extensions. For instance, to search current directory and directories under the current directory for files with .go , .py and .php extensions :

>find ~ -type f | grep -E "\.go$|\.py$|\.php$"