gitignore binary files that have no extension

Question

How can binary files be ignored in git using the .gitignore file?

Example:

$ g++ hello.c -o hello

The

Answer 1

Add the following to your .gitignore file:

[^\.]*

Explanation:

[] encloses a character class, e.g. [a-zA-Z] means "any letter".
^  means "not"
\. means a literal dot - without the backslash . means "any character"
*  means "any number of these characters"