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annotate scripts/miscellaneous/unix.m @ 14626:f947d2922feb stable rc-3-6-2-0

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3.6.2-rc0 release candidate * configure.ac (AC_INIT): Version is now 3.6.2-rc0. (OCTAVE_RELEASE_DATE): Now 2012-05-11.
author John W. Eaton <jwe@octave.org>
date Fri, 11 May 2012 13:46:18 -0400
parents 72c96de7a403
children bc924baa2c4e
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 2004-2012 John W. Eaton
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} unix ("@var{command}")
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21 ## @deftypefnx {Function File} {@var{status} =} unix ("@var{command}")
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22 ## @deftypefnx {Function File} {[@var{status}, @var{text}] =} unix ("@var{command}")
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23 ## @deftypefnx {Function File} {[@dots{}] =} unix ("@var{command}", "-echo")
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24 ## Execute a system command if running under a Unix-like operating
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25 ## system, otherwise do nothing. Return the exit status of the program
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26 ## in @var{status} and any output from the command in @var{text}.
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27 ## When called with no output argument, or the "-echo" argument is
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28 ## given, then @var{text} is also sent to standard output.
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29 ## @seealso{dos, system, isunix, ispc}
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30 ## @end deftypefn
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31
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32 ## Author: octave-forge ???
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33 ## Adapted by: jwe
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34
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35 function [status, text] = unix (command, echo_arg)
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36
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37 if (nargin < 1 || nargin > 2)
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38 print_usage ();
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39 elseif (isunix ())
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40 [status, text] = system (command);
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41 if (nargin > 1 || nargout == 0)
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42 printf ("%s\n", text);
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43 endif
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44 endif
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45
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46 endfunction
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47
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48
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49 %!test
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50 %! cmd = ls_command ();
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51 %! old_wstate = warning ("query");
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52 %! warning ("off", "Octave:undefined-return-values");
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53 %! unwind_protect
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54 %! [status, output] = unix (cmd);
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55 %! unwind_protect_cleanup
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56 %! warning (old_wstate);
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57 %! end_unwind_protect
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58 %!
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59 %! if (isunix ())
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60 %! assert (status, 0);
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61 %! assert (ischar (output));
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62 %! assert (! isempty (output));
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63 %! else
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64 %! assert (status, []);
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65 %! assert (output, []);
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66 %! endif
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67
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68 %!error unix ()
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69 %!error unix (1, 2, 3)
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70