question: long freeSpaceWindows ( String path , long timeout ) throws IOException { path = FilenameUtils . normalize ( path , false ) ; if ( path . length ( ) > 0 && path . charAt ( 0 ) != '"' ) { path = "\"" + path + "\"" ; } String [ ] cmdAttribs = new String [ ] { "cmd.exe" , "/C" , "dir /a /-c " + path } ; List < String > lines = performCommand ( cmdAttribs , Integer . MAX_VALUE , timeout ) ; for ( int i = lines . size ( ) - 1 ; i >= 0 ; i -- ) { String line = lines . get ( i ) ; if ( line . length ( ) > 0 ) { return parseDir ( line , path ) ; } } throw new IOException ( "Command line 'dir /-c' did not return any info " + "for path '" + path + "'" ) ; }
target:  Find free space on the Windows platform using the 'dir' command.