Search notes:

/dev/shm

/dev/shm can be used to share data between processes.
This directory is also (or only?) the place where named semaphores are created.
Apparently, on some systems, /dev/shm is a symbolic link to /run/shm.

See also

The Docker commands docker create and docker run have the option --shm-size to set the size of /dev/shm.
/run/shm
/dev

Index

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