MarkLogic 12 EA 1 Product Documentation
xdmp:filesystem-file-exists

xdmp:filesystem-file-exists(
   $pathname as xs:string,
   [$host as xs:unsignedLong?]
) as xs:boolean

Return true if a file exists on a host; otherwise false.

Parameters
pathname	Pathname of the file on a certain host.
host	ID of the host. If omitted, uses the current host ID (for example, the output of a call to `xdmp:host`).

http://marklogic.com/xdmp/privileges/xdmp-filesystem-file-exists

xdmp:filesystem-file-exists("/testdata1/a.jpg")
=> true

MarkLogic 12 EA 1 Product Documentationxdmp:filesystem-file-exists