shell - Specific characters in command line

Question

I am working in cmd and I found a symbol that I am not sure for what reason is used. Why do we use "~/" in command line. Specifically in that case:

cp -R modules/swagger-codegen/src/main/resources/htmlDocs2 ~/templates

Thank you!

Answer 1

~/ is short term for your home directory

~username/ is short term to username's home directory