linux ps sample

ps -ef|grep "myswooleserver.php"| grep -v "grep" | wc -l
4
cpc@cpc-Aspire-6935:~/Downloads$ ps -ef|grep "myswooleserver.php"| grep -v "grep" 
cpc      16849 16472  0 15:06 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc      16850 16849  0 15:06 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc      16853 16850  0 15:06 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc      16854 16850  0 15:06 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc@cpc-Aspire-6935:~/Downloads$ ./myswoolelauncher.sh
4
cpc@cpc-Aspire-6935:~/Downloads$ ./myswoolelauncher.sh
0
cpc@cpc-Aspire-6935:~/Downloads$ ps -fe|grep "myswooleserver.php"| grep -v "grep" 
cpc      17113 16472  0 15:14 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc      17114 17113  0 15:14 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc      17117 17114  0 15:14 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc      17118 17114  0 15:14 pts/3    00:00:00 php /home/cpc/Downloads/myswooleserver.php
cpc@cpc-Aspire-6935:~/Downloads$ ps -eaf |grep "myswooleserver.php" | grep -v "grep"| awk '{print $2}'
17113
17114
17117
17118
cpc@cpc-Aspire-6935:~/Downloads$ ps -eaf |grep "myswooleserver.php" | grep -v "grep"| awk '{print $2}'|xargs
17113 17114 17117 17118

some of  them