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Using and Porting GNU Fortran

8.11.9.3 Access Intrinsic

Access(Name, Mode)

Access: INTEGER(KIND=1) function.

Name: CHARACTER; scalar; INTENT(IN).

Mode: CHARACTER; scalar; INTENT(IN).

Intrinsic groups: unix.

Description:

Checks file Name for accessibility in the mode specified by Mode and returns 0 if the file is accessible in that mode, otherwise an error code if the file is inaccessible or Mode is invalid. See access(2). A null character (`CHAR(0)') marks the end of the name in Name---otherwise, trailing blanks in Name are ignored. Mode may be a concatenation of any of the following characters:

`r'

Read permission

`w'

Write permission

`x'

Execute permission

`SPC'

Existence