Print a list of which files have been opened, and whether they are open for reading, writing, or both.
For example:
freport ()
    -|  number  mode  arch       name
    -|  ------  ----  ----       ----
    -|     0     r    ieee-le    stdin
    -|     1     w    ieee-le    stdout
    -|     2     w    ieee-le    stderr
    -|     3     r    ieee-le    myfile
See also: fopen, fclose, is_valid_file_id.
Package: octave