Update GNU/Linux Server | Submitty

Please also see Update Submitty and Installation Version Notes.

Announce Upcoming System Outage

In advance of system updates or system maintenance, you may wish to announce the outage to your users. To do this, edit the /usr/local/submitty/config/submitty.json file adding/editing the "system_message" field:
```
 "system_message" : "We will have brief maintenance outage on Tuesday at 8am."
```

Update Your GNU/Linux Server

Below are simplified server update instructions for Ubuntu GNU/Linux. Follow best practices on frequency of updates and system maintenance.

Check your current kernel version
```
uname -r
```

Update the Linux Kernel & Linux Packages

sudo apt-get update
sudo apt-get upgrade

Reboot the server
Confirm that your kernel version has been updated appropriately
```
uname -r
```