Remote Shutdown of a Linux / Unix Computer From MS-Windows

How do I shutdown remote Linux or UNIX system from MS-Windows system?

You can use secure shell (ssh), a network protocol for remote administration of Linux and Unix based computers. SSH is typically used to log into a remote server and execute commands such as reboot or shutdown.

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PuTTY SSH Client

PuTTY is a free and open source terminal emulator application which can act as a client for the SSH under MS-Windows operating system. Visit this page and download putty client. In order to use putty you need to know:

• IP or Server Name: The name of the Linux or UNIX server you want to connect to.
• Username and password: Login name or password to used on your server.

If you don’t know what login name or password to use, contact the administrator of your server.

Once connected you need to login as root using sudo or su – command. Type the following command to shutdown remote system:
# shutdown -h now
OR
# /sbin/shutdown -h now
To reboot the system, enter:
# shutdown -r now
OR
# /sbin/reboot
A typical login session – PuTTY running on Windows, logged in to a DD-WRT Linux based Internet router system:

Category	List of Unix and Linux commands
File Management	cat
Firewall	CentOS 8 • OpenSUSE • RHEL 8 • Ubuntu 16.04 • Ubuntu 18.04 • Ubuntu 20.04
Network Utilities	dig • host • ip • nmap
OpenVPN	CentOS 7 • CentOS 8 • Debian 10 • Debian 8/9 • Ubuntu 18.04 • Ubuntu 20.04
Package Manager	apk • apt
Processes Management	bg • chroot • cron • disown • fg • jobs • killall • kill • pidof • pstree • pwdx • time
Searching	grep • whereis • which
User Information	groups • id • lastcomm • last • lid/libuser-lid • logname • members • users • whoami • who • w
WireGuard VPN	CentOS 8 • Debian 10 • Firewall • Ubuntu 20.04