Linux Shell Scripting Cookbook - Third Edition

How to do it...

The service command is supported on most distributions. The -status-all option will report the current status of all services defined in /etc/init.d. The output format varies between distributions:

    $> service -status-all

Debian:

 [ + ]  acpid
 [ - ]  alsa-utils
 [ - ]  anacron
 [ + ]  atd
 [ + ]  avahi-daemon
 [ - ]  bootlogs
 [ - ]  bootmisc.sh
...

CentOS:

abrt-ccpp hook is installed
abrtd (pid  4009) is running...
abrt-dump-oops is stopped
acpid (pid  3674) is running...
atd (pid  4056) is running...
auditd (pid  3029) is running...
...

The grep command will reduce the output to only running tasks:

Debian:

    $ service -status-all | grep +

CentOS:

    $ service -status-all | grep running

You should disable any unnecessary services. ...