open fun rxMkdir(path: String): Completable
Create the directory represented by path, asynchronously.
The operation will fail if the directory already exists.
Return
open fun rxMkdir(path: String, perms: String): Completable
Create the directory represented by path, asynchronously.
The new directory will be created with permissions as specified by perms.
The permission String takes the form rwxr-x--- as specified in here.
The operation will fail if the directory already exists.
perms - the permissions string
Return