How to check service status in linux

1. Use the process to check

Use the command:

ps -aux ｜ grep xxx

to check whether a process or service exists.

Online video tutorial sharing: linux video tutorial

2. Use the services command

1. View the operation of a single service Status:

service 服务名 status

Such as:

[root@localhost ~]# service sshd status 
openssh-daemon (pid 3701) 正在运行…

2. View the running status of all services:

service –status -all

3. Use the chkconfig configuration tool

(There is no chkconfig command in Ubuntu, you can use update-rc.d instead. The update-rc.d command in Ubuntu or Debian systems is a script used to update system startup items. The links to these scripts are located in / etc/rcN.d/ directory, and the corresponding script is located in the /etc/init.d/ directory. Before understanding the update-rc.d command, what you need to know is the main startup steps of the Linux system and the knowledge of the run level in Ubuntu. )

1. Check the running status of a single service:

chkconfig 服务名 status

2. Check the running status of all services

chkconfig –list

3. Close or start the service Status:

chkconfig –level 345 nscd off/on

4. Add service:

chkconfig –add xxx

(Note: The service script must be stored in the /etc/init.d/ directory)

For example, mysqld:

[root@www mysql-5.1.59]#cp support-files/mysql.server etc/init.d/mysqld 
chkconfig mysqld on

(each level is ON, each level is 2345 level) This will start as a system service.

5. Delete service:

chkconfig –del XXX

runlevel Check the current level.

Note: The run level is the functional level at which the operating system is running.

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