Common commands in CentOS7

Apr 13, 2024#CentOS7学习笔记159

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Common commands in CentOS 7 include runlevel, init, clear, ip addr, ping, systemctl, getenforce, setenforce, and echo. These commands are used for tasks such as checking run levels, managing services, testing network connectivity, and printing messages.

Common Commands in CentOS7#

System Commands#

Check runlevel: runlevel

Knowledge about runlevel:

0: Shutdown
1: Single-user text mode (password recovery)
2:
3: Multi-user text mode
4:
5: Multi-user graphical mode
6: Reboot

Switch runlevel: init
Clear screen command: clear

Network Commands#

View local IP: ip addr
Test network connectivity: ping

Service Commands#

systemctl: Manage services

systemctl service_name status: Check service status

systemctl service_name stop: Stop service

systemctl service_name start: Start service

systemctl service_name restart: Restart service

systemctl service_name enable: Enable service at boot

systemctl service_name disable: Disable service at boot

getenforce: Check the status of selinux

setenforce: Set the status of selinux

Other Commands#

echo: Print message

tar -z