What does ~ mean in a Linux shell?

I'm new to Linux and have been seeing this often. Could someone explain the concept here?

~/.somefilename

What does the ~ (tilde) signify?

Solution 1:

The ~ (tilde) is a quick way of specifying your home directory.

The ~/.somefilename means your home directory, the file .somefilename.

Solution 2:

The tilde ~ character is interpreted by most shells as the "home directory" for you. The "." doesn't mean anything if it's part of a filename, although some programs such as ls will (unless explicitely told otherwise) not show files if their name starts with a "dot". Sort of a "hidden" attribute.