/usr/share/octave/packages/optim-1.4.1/optim_doc.m is in octave-optim 1.4.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | ## Copyright (C) 2014 Olaf Till
##
## This program is free software; you can redistribute it and/or modify it under
## the terms of the GNU General Public License as published by the Free Software
## Foundation; either version 3 of the License, or (at your option) any later
## version.
##
## This program is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
## details.
##
## You should have received a copy of the GNU General Public License along with
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} optim_doc ()
## @deftypefnx {Function File} {} optim_doc (@var{keyword})
## Show optim package documentation.
##
## Runs the info viewer Octave is configured with on the documentation
## in info format of the installed optim package. Without argument, the
## top node of the documentation is displayed. With an argument, the
## respective index entry is searched for and its node displayed.
##
## @end deftypefn
function optim_doc (keyword)
if ((nargs = nargin ()) > 1)
print_usage ()
endif
## locate installed documentation
persistent infopath = "/usr/share/info/octave-optim.info.gz";
## display info
INFO = info_program ();
if (nargs)
error_hint = ", maybe the keyword was not found in the index";
status = system (sprintf ("%s %s --index-search \"%s\"",
INFO, infopath, keyword));
else
error_hint = "";
status = system (sprintf ("%s %s", INFO, infopath));
endif
if (status)
if (status == 127)
error ("unable to find info program `%s'", INFO);
else
error ("info program `%s' returned error code %i%s",
INFO, status, error_hint);
endif
endif
endfunction
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