基于类似主题的回答https://askubuntu.com/a/58406我更喜欢:/etc/init.d / postgres状态

在linux操作系统中查询某项服务的状态。

//in case of super user(admin) requires    
sudo service {service_name} status 
// in case of normal user
service {service_name} status 

停止或启动服务

// in case of admin requires
sudo service {service_name} start/stop
// in case of normal user
service {service_name} start/stop 

获取所有服务和PID的列表:

sudo service --status-all

你可以使用systemctl代替直接调用service:

systemctl status/start/stop {service_name}

Centos 6.10: /sbin/service serviceNAME状态

Centos 7.6和ubuntu 18.04: systemctl状态

对所有人都适用: 服务状况都

最好的方法是在终端中使用nmap工具。 nmap是一个有用的工具，它可以分析一个up系统，使用它的IP地址，然后显示所有激活的网络服务。

打开终端和使用本例:

~$ nmap 192.168.1.3/24

Starting Nmap 5.21 ( http://nmap.org ) at 2016-05-16 22:49 IRDT
Nmap scan report for 192.168.1.3
Host is up (0.00020s latency).
Not shown: 994 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
23/tcp   open  telnet
139/tcp  open  netbios-ssn
445/tcp  open  microsoft-ds
3389/tcp open  ms-term-serv
3689/tcp open  rendezvous

也许你想要的是ps命令;

ps -ef

将显示所有正在运行的进程。然后，如果你知道你要找什么，使用grep进行筛选;

ps -ef | grep postgres

查找正在运行的服务的肮脏方法。(有时它是不准确的，因为一些自定义脚本没有|状态|选项)

[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...