# INQUIRE: EXIST Specifier

The EXIST specifier asks whether a file exists and can be opened. It takes the following form:

EXIST = ex

ex | Is a scalar default logical variable that is assigned one of the following values:
.TRUE. | If the specified file exists and can be opened, or if the specified unit exists
.FALSE. | If the specified file or unit does not exist or if the file exists but cannot be opened

The unit exists if it is a number in the range allowed by the processor.

Parent topic: INQUIRE Statement Specifiers