pi@raspberrypi ~ $ ps -ef | grep apache
root 2237 1 0 15:46 ? 00:00:00 /usr/sbin/apache2 -k start
www-data 2241 2237 0 15:46 ? 00:00:00 /usr/sbin/apache2 -k start
www-data 2242 2237 0 15:46 ? 00:00:00 /usr/sbin/apache2 -k start
www-data 2243 2237 0 15:46 ? 00:00:00 /usr/sbin/apache2 -k start
www-data 2244 2237 0 15:46 ? 00:00:00 /usr/sbin/apache2 -k start
www-data 2245 2237 0 15:46 ? 00:00:00 /usr/sbin/apache2 -k start
pi 3421 2350 0 15:52 pts/1 00:00:00 grep --color=auto apache