Hello and welcome to the fifth entry in “Know Your Linux“ series. This time let’s talk about Linux’s services.
Before we dive right in 🏄♂️, make sure to check out the previous entry.
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Do you have your diving mask on? Let’s go.
WTF is a service or a daemon?
Daemons are a kind of non-interactive process that runs in the background. They basically are detached from the keyboard and display.
Services also do not need a terminal. They run in the background to provide some service like apache.
All good and dandy, but what could we do?
I would like to introduce you guys to systemctl. What’s that? It’s a super cool program used to inspect and control services running on your machine. When it comes to services systemctl is your friend.
There is so much that you can do with systemctl. We will discuss the most famous use cases. If you want to know more, you should definitely visit the man pages. If you don’t know what the man pages are. Take a quick look at my second entry.
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systemctl is a command-line program. All you need to do is type the command in terminal.
systemctl COMMAND SERVICE
The service here is the command’s target. Basically, it is the service you want to manage using systemctl.
What about the command? There is a list of commands you can do.
| Command | What it does? |
|---|---|
| status | Returns the status of the service |
| start | Attempts to start the service 🙏 |
| stop | Stops the service |
| restart | Restarts the service |
| reload | Reloads the service’s configuration. This applies the new configuration. |
| enable | Enables autostart on boot |
| disable | Disables autostart on boot |
Service’s status
Now, Let’s see the different statuses that every service could have.
| Status Name | Status Description |
|---|---|
| loaded | The service’s configuration files have been loaded successfully |
| active | The service is running or waiting for a certain event to run. |
| inactive | The service is not currently running |
| enabled | The service will start at boot |
| disabled | The service will not start at boot |
That’s all from my side. ✋
If you enjoyed the post, please let me know and checkout the next entry. 🙄
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As always,
Happy coding 🔥🔥
“كود بسعادة”
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