强制linux自动生成snmp陷阱

我想在服务器上的任何服务停止时自动生成一个陷阱。我必须为此做些什么。这是我必须正确的脚本，因为我们必须配置snmptrapd.conf，所以请让我知道一些这样做的例子

-- 谢谢

法鲁克·侯赛因引用NETSNMP文档

Process Monitoring

 The list of services running on a system can be monitored (and provision made for correcting any problems), using:
# At least one web server process must be running at all times
proc    httpd
procfix httpd  /etc/rc.d/init.d/httpd restart

# There should never be more than 10 mail processes running
#    (more implies a probable mail storm, so shut down the mail system)
proc    sendmail   10
procfix sendmail  /etc/rc.d/init.d/sendmail stop

# There should be a single network management agent running
#   ("There can be only one")
proc    snmpd    1  1