*.exe

Search for all applications.

a*.txt

Search for all text files which are starting with a .

"ab"

Search for all files with the name ab .

ab

Search for all files which are containing ab in their name.

ab*

Search for all files which are starting with ab.

*ab

Search for all files which are ending with ab.

a?b

The wildcard "?" replaces exactly one character.

"help.txt"

Search for all files with the name help.txt .

help.txt

Search for all files which are containing help.txt in their name.

Possible result: old_help.txt .

C:\Test\*.exe

Search for all applications in the directory Test and all subfolders on drive C: .

The drive C: has to be checked to find results.

*.

Search for all files without file extension.

*.exe;*.txt

Search for all applications and all text files.