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