I use Redhat 6.5 , and want to list all service are running in the system , I found there are two command can do that .

#service --status-all |more
#chkconfig --list |more

I have two questions .

1) the second command ( chkconfig ) seems show more service are running , may I know what is the difference of these two command ?

2) some services can not show in these two command , may be it is because these services are not installed by yum , if so , how can I list ALL services are running includes such kind of services ?

Thanks

Have you tried

Those ways will show which ones are officially installed and what their official settings are. You can see all the processes that are actively running and listening using "netstat"

Hopefully it will be a subset of those officially installed.

It's best to stick with programs installed via the package manager only, since that makes them far easier to maintain and keep track of.

would be nice to show some examples, what do you really mean

chkconfig shows all POSSIBLE services and their state in each of the run levels (around 6). If you see the word "ON" then it should be started when the system in the corresponding run level.
The only way to see what is running on the system is by using the "ps" command (process status), or "top" (which sorts the list before displaying it, and repeats on a time interval).