Linux Pipes
ref: https://man7.org/linux/man-pages/man7/pipe.7.html
provide a unidirectional interprocess communication channel
A pipe is created using pipe(2) which creates a new pipe and returns two file descriptors, one referring to the read end of the pipe, the other referring to the write end.
There’s also FIFO_pipes , which are named pipes
A pipe has a limited capacity (default 16 pages, each page 4KiB), an application should be designed so that a reading process consumes data as soon as it is written by writing process.
Memory used for pipes can be configured by modifying the values present in /proc/sys/fs/pipe-*
files