1 ## Copyright (C) 2004-2012 John W. Eaton
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
10 ## Octave is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {} unix ("@var{command}")
21 ## @deftypefnx {Function File} {@var{status} =} unix ("@var{command}")
22 ## @deftypefnx {Function File} {[@var{status}, @var{text}] =} unix ("@var{command}")
23 ## @deftypefnx {Function File} {[@dots{}] =} unix ("@var{command}", "-echo")
24 ## Execute a system command if running under a Unix-like operating
25 ## system, otherwise do nothing. Return the exit status of the program
26 ## in @var{status} and any output from the command in @var{text}.
27 ## When called with no output argument, or the "-echo" argument is
28 ## given, then @var{text} is also sent to standard output.
29 ## @seealso{dos, system, isunix, ispc}
32 ## Author: octave-forge ???
35 function [status, text] = unix (command, echo_arg)
37 if (nargin < 1 || nargin > 2)
40 [status, text] = system (command);
41 if (nargin > 1 || nargout == 0)
42 printf ("%s\n", text);
50 %! cmd = ls_command ();
51 %! old_wstate = warning ("query");
52 %! warning ("off", "Octave:undefined-return-values");
54 %! [status, output] = unix (cmd);
55 %! unwind_protect_cleanup
56 %! warning (old_wstate);
60 %! assert (status, 0);
61 %! assert (ischar (output));
62 %! assert (! isempty (output));
64 %! assert (status, []);
65 %! assert (output, []);
69 %!error unix (1, 2, 3)