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(standard-devices)=
# Standard devices
Incus provides each instance with the basic devices that are required for a standard POSIX system to work.
These devices aren't visible in the instance or profile configuration, and they may not be overridden.
The standard devices are:
| Device | Type of device |
|:---------------|:------------------|
| `/dev/null` | Character device |
| `/dev/zero` | Character device |
| `/dev/full` | Character device |
| `/dev/console` | Character device |
| `/dev/tty` | Character device |
| `/dev/random` | Character device |
| `/dev/urandom` | Character device |
| `/dev/net/tun` | Character device |
| `/dev/fuse` | Character device |
| `lo` | Network interface |
Any other devices must be defined in the instance configuration or in one of the profiles used by the instance.
The default profile typically contains a network interface that becomes `eth0` in the instance.
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