Functions in the Filesystem API:
fs.list( path )
fs.exists( path )
fs.isDir( path )
fs.isReadOnly( path )
fs.getName( path )
fs.getSize( path )
fs.getDrive( path )
fs.makeDir( path )
fs.move( path, path )
fs.copy( path, path )
fs.delete( path )
fs.combine( path, localpath )
fs.open( path, mode )
Available fs.open() modes are "r", "w", "a", "rb", "wb" and "ab".