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[–] 3 points 15 hours ago (2 children)

Missing stage 7: Not everything is a file.

Linux is closer than other *nixes (sysctl equivalents in some platforms are not files, but they are files in Linux).

However get very far into network and the file-like behaviors become more limited. From an application, at least you have a decent chance of having unseekable, but otherwise 'file-like' interaction with stream protocols. Then you need recvmsg/sendmsg. Then you want to deal with low level interaction with the network stack and dealing with NETLINK and such..

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