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Re:Persistent “pipes” in Linux by smilliken on Sunday August 16, 2015 @02:00PM (#10069675)
Named pipes, mkfifo[1] in Linux, may be what you're looking for.

[1] https://en.wikipedia.org/wiki/Named_pipe#In_Unix

Re:Persistent “pipes” in Linux by cafxx on Sunday August 16, 2015 @06:36PM (#10070519)
Nope, the data they contain does not persist across OS restarts. Also they have hard limits on how much data they can contain because they are in-memory (http://man7.org/linux/man-pages/man7/fifo.7.html)