# Linux Runtime

## 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.

# Linux Runtime

## 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.

Use RFC_2119 style for runtime_linux.md
Use RFC_2119 style for runtime_linux.md

Signed-off-by: Qiang Huang <488e06933c295c76472a67dbc6657ac40a756953@huawei.com>
