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6 changes: 3 additions & 3 deletions runtime-linux.md
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# Linux Runtime
# <a name="linuxRuntime" />Linux Runtime

## File descriptors
## <a name="runtimeLinuxFileDescriptors" />File descriptors

By default, only the `stdin`, `stdout` and `stderr` file descriptors are kept open for the application by the runtime.
The runtime MAY pass additional file descriptors to the application to support features such as [socket activation](http://0pointer.de/blog/projects/socket-activated-containers.html).
Some of the file descriptors MAY be redirected to `/dev/null` even though they are open.

## Dev symbolic links
## <a name="runtimeLinuxDevSymbolicLinks" /> Dev symbolic links

After the container has `/proc` mounted, the following standard symlinks MUST be setup within `/dev/` for the IO.

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