(require mzlib/file)

The mzlib/file library mostly re-exports from scheme/file:

find-relative-path

explode-path

normalize-path

filename-extension

file-name-from-path

path-only

delete-directory/files

copy-directory/files

make-directory*

make-temporary-file

get-preference

put-preferences

fold-files

find-files

pathlist-closure

(call-with-input-file* file proc [mode]) → any   file : path-string?   proc : (input-port? -> any)   mode : (one-of/c 'text 'binary) = 'binary

(call-with-output-file*   file             proc            [ mode             exists])   →   any   file : path-string?   proc : (output-port? -> any)   mode : (one-of/c 'text 'binary) = 'binary    exists   :   (one-of/c 'error 'append 'update           'replace 'truncate 'truncate/replace)       =   'error

Like call-with-input-fileand call-with-output-file, except that the opened port is closed if control escapes from the body of proc.

(build-relative-path base sub ...) → (and/c path? relative-path?)    base   :   (or/c path-string?       (one-of/c 'up 'same))    sub   :   (or/c (and/c path-string?              relative-path?)       (one-of/c 'up 'same))

(build-absolute-path base sub ...) → (and/c path? absolute-path?)    base   :   (or/c (and/c path-string?              (not/c relative-path?))       (one-of/c 'up 'same))    sub   :   (or/c (and/c path-string?              (not/c complete-path?))       (one-of/c 'up 'same))

Like build-path, but with extra constraints to ensure a relative or absolute result.