tldr/pages/linux/systemd-sysext.md

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# systemd-sysext
> Activate or deactivate system extension images.
> More information: <https://www.freedesktop.org/software/systemd/man/systemd-sysext.html>.
- List installed extension images:
`systemd-sysext list`
- Merge system extension images into `/usr/` and `/opt/`:
`systemd-sysext merge`
- Check the current merge status:
`systemd-sysext status`
- Unmerge all currently installed system extension images from `/usr/` and `/opt/`:
`systemd-sysext unmerge`
- Refresh system extension images (a combination of unmerge and merge):
`systemd-sysext refresh`