exec(top n 1) does not work

99Percent

exec('top n 1', $top);
echo nl2br(implode("\n",$top));

Returns nothing. What am I missing?

hagen00

I doubt nothing is returned. Check that error reporting is on in the php.ini and check the error log in /var/log/apache2/error.log (assuming you have apache2 on linux). That might help you further.

99Percent

Actually I do get this in the browser:

[0;1H

hagen00

dude, that's very weird! Can't tell you much from that except check your error logs and see if you can't find out more from them. Sorry.

99Percent

I think has to do with the fact that Top is a command that somehow uses terminal commands (that output being a cursor positioning command I think). I tried putting this code:

exec('TERM=linux top n 1',$top);
echo nl2br(implode("\n",$top));

But it would still not work. What finally did work which I just discovered was adding the b parameter (batch mode) to the top command:

exec('TERM=linux top b n 1',$top);
echo nl2br(implode("\n",$top));

Thanks anyway 🙂