Systemctl vs Service Command: Key Differences and Usage

The systemctl command is the modern tool to manage systemd services on Linux, offering more control and features. The service command is older, mainly used for SysVinit scripts, and acts as a compatibility layer on systemd systems.

Quick Comparison

This table summarizes the main differences between systemctl and service commands.

Feature	systemctl	service
Primary Use	Manage systemd services	Manage SysVinit services or compatibility
Supported Systems	Linux with systemd (modern distros)	Older Linux distros or compatibility mode
Syntax Complexity	More options and detailed control	Simpler, fewer options
Service Status Detail	Detailed status and logs	Basic status output
Start/Stop Services	Yes, with fine control	Yes, basic start/stop/restart
Replacement Status	Preferred on systemd systems	Legacy, mostly compatibility

Key Differences

systemctl is the native command for managing services on Linux systems using the systemd init system. It provides detailed control over service states, dependencies, and logs. It can start, stop, enable, disable, and check the status of services with rich output.

On the other hand, service is an older command originally designed for SysVinit systems. It acts as a wrapper or compatibility layer on systemd systems to run legacy init scripts. Its output and control options are more limited compared to systemctl.

While service can still start and stop services, it does not provide the detailed status or logging features of systemctl. Modern Linux distributions encourage using systemctl for all service management tasks.

systemctl Code Comparison

Here is how you start, check status, and stop the nginx service using systemctl:

bash

sudo systemctl start nginx
sudo systemctl status nginx
sudo systemctl stop nginx

Output

● nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2024-06-14 10:00:00 UTC; 5s ago
 Main PID: 1234 (nginx)
    Tasks: 3 (limit: 4915)
   Memory: 5.0M
   CGroup: /system.slice/nginx.service
           ├─1234 nginx: master process /usr/sbin/nginx
           └─1235 nginx: worker process

[Press q to quit status]

service Equivalent

Here is how you perform the same tasks with the service command:

bash

sudo service nginx start
sudo service nginx status
sudo service nginx stop

Output

 * Starting nginx nginx
   ...done.
 * nginx is running
 * Stopping nginx nginx
   ...done.

When to Use Which

Choose systemctl when working on modern Linux systems with systemd, as it provides full control, detailed status, and logging features. It is the recommended and future-proof tool for managing services.

Use service only when working on older Linux distributions without systemd or when running legacy scripts that require it. On systemd systems, service is mainly for backward compatibility and offers limited functionality.

Key Takeaways

Use systemctl for full-featured service management on modern Linux systems.

service is a legacy command mainly for compatibility with older init systems.

systemctl provides detailed status, logs, and control options not available in service.

Modern Linux distributions recommend replacing service with systemctl.

Use service only if working with legacy systems or scripts without systemd.