/usr/share/psychtoolbox-3/PsychOneliners/Stopwatch.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 | % Stopwatch
%
% Time intervals.
%
% Press down the shift key to start the stopwatch. Release it to stop.
% Use command-period (i.e. apple and period keys) to quit.
%
% HISTORY
% 11/27/02 dgp Wrote it.
% 10/25/05 awi Cosmetic.
fprintf('Use the shift key. Press down to start; release to stop.\n');
fprintf('Hit command-period (i.e. apple and period keys) to quit.\n');
while KbCheck
end
while 1
keyIsDown=0;
while ~keyIsDown
[keyIsDown,timePress,keyCode] = KbCheck;
end
% snd('Play',0.2*sin((0:100000)/10));
while keyIsDown
[keyIsDown,timeRelease,keyCode] = KbCheck;
end
% snd('Quiet');
t=timeRelease-timePress;
fprintf('%.3f\ts\n',t);
end
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