Attach to process

create a pipe: mkfifo /tmp/fifo.

Use gdb to attach to the process: gdb -p PID

Then close stdin: call close (0); and open it again: call open (“/tmp/fifo”, 0600)

Finally, write away (from a different terminal, as gdb will probably hang):

echo blah > /tmp/fifo

========

view only:

cd /proc/PID/fd

tail -f 1..3

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