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#unix socket files are not automatically removed when the socket is closed. They need to be manually cleaned up when closing if this is desired by calling remove/ unlink with the filepath, but openssh does not do this. However, as I researched the subject further I came to the realisation that the "best practice" with unix sockets is to unlink right before binding to it
--sof
@xameer The other day I learned this approach was one of the first for shared memory in classic Unix before special system calls:
Process 1 opens file (descriptor), Process 2 does the same, one of them deletes the file in fs.
As both file descriptors are still open, the processes can communicate over the kernels filedesciptor buffers by read(), write() from/to the descriptor.