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C++ API

: fname = tempname ()

: fname = tempname (dir)

: fname = tempname (dir, prefix)

Return a unique temporary filename as a string.

If prefix is omitted, a value of "oct-" is used.

If dir is also omitted, the default directory for temporary files (P_tmpdir) is used. If dir is provided, it must exist, otherwise the default directory for temporary files is used.

Programming Note: Because the named file is not opened by tempname, it is possible, though relatively unlikely, that it will not be available by the time your program attempts to open it. If this is a concern, see tmpfile.

See also: mkstemp, tempdir, P_tmpdir, tmpfile.

Package: octave