This file is indexed.

/usr/share/psychtoolbox-3/PsychOneliners/IsLinux.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.

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
function resultFlag = IsLinux(is64)

% resultFlag = IsLinux([is64=0])
%
% Returns true if the operating system is Linux.
% If optional 'is64' flag is set to one, returns
% true if the runtime is 64 bit and on Linux.
% 
% See also: IsOSX, IsWin, OSName, computer

% HISTORY
% ??/??/?? ??? Wrote it.
% 6/30/06  awi Fixed help section.  
% 6/18/11   mk Handle query if 64 bit runtime as well.
% 6/13/12   dn Simplified

persistent rc;
persistent rc64;

% check input
if nargin < 1 || isempty(is64)
     is64 = 0;
end


if isempty(rc)
     rc= streq(computer,'GLNX86') || streq(computer,'GLNXA64') || ~isempty(strfind(computer, 'linux-gnu'));
end

if isempty(rc64)
     rc64 = rc && ~isempty(strfind(computer, '64'));
end

if is64 == 0
     resultFlag = rc;
else
     resultFlag = rc64;
end