Problem solved. I had to uncomment a line in php.ini: Thanks for leading me to the right direction!

I'm running Raspbian 3.6.11+ #538. I have a php web page on lighttpd to take webcam photos with fswebcam. The php part: <?php $command = "/var/www/bin/TakeAnotherPic.sh"; echo "<H1>Taking a picture at the moment...</H1>\n"; $output = shell_exec($command); echo "$output"; ?> The script: #!/bin/sh PAT...