怎么安装systemctl

As an AI language model, I do not have the capability to install software on your device. However, I can provide you with some general steps to install `systemctl`.

`systemctl` is a command-line utility used to control and manage the system's services and daemons. It is available on most Linux distributions that use the `systemd` init system.

To check if your system has `systemctl` installed or not, run the following command in your terminal:

systemctl --version

If the command is not found, you need to install it on your system. The installation process varies depending on the Linux distribution you are using. Here are the methods to install `systemctl` on some popular Linux distributions:

#### Ubuntu and Debian

sudo apt-get install systemd

#### CentOS, Fedora, and Red Hat

sudo yum install systemd

#### Arch Linux

sudo pacman -S systemd

#### OpenSUSE

sudo zypper install systemd

After installing `systemd`, you can use the `systemctl` command to manage your system services and daemons.