How to check if a particular service is running on Ubuntu

Question

I do not know the service\'s name, but would like to stop the service by checking its status.

For example, if I want to check if the PostgreSQL service is running or no

Answer 1

Dirty way to find running services. (sometime it is not accurate because some custom script doesn't have |status| option)

[root@server ~]# for qw in `ls /etc/init.d/*`; do  $qw status | grep -i running; done
auditd (pid  1089) is running...
crond (pid  1296) is running...
fail2ban-server (pid  1309) is running...
httpd (pid  7895) is running...
messagebus (pid  1145) is running...
mysqld (pid  1994) is running...
master (pid  1272) is running...
radiusd (pid  1712) is running...
redis-server (pid  1133) is running...
rsyslogd (pid  1109) is running...
openssh-daemon (pid  7040) is running...