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Re:Linux Namespaces Are a Poor Man's Plan 9 Namespaces by mrAssHat on Wednesday June 21, 2023 @05:56AM (#36416544)
Huh? Have you never written stuff to files procfs or sysfs?

Not every file there is seekable/readable - some only exist as an input interface to change some property.

The very same way there could exist a 'signals' file to write signals to.

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