Questions tagged [mkfifo]
The mkfifo tag has no usage guidance.
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0answers
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Where should I place named pipe files on RHEL7?
I done some quicky web searches to find out how to make a named pipe. It looks very straight forward I just need to execute as root: mkfifo filename, but what the best practice on where on the ...
2
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1answer
40 views
How to create a bidirectional pipe in bash?
I have a program which reads from and writes to file descriptor 3. I want to let it write to fd 3, and be able to write to the other end of the pipe interactively which the program should read over ...
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0answers
279 views
Cleaning/flushing of named pipe
I create FIFO to communicate between unrelated processes. In my project there is no way to break infinite loop in which the program runs. So, I can't unlink the FIFO.
I thought that I could remove ...
0
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1answer
165 views
Process substitution vs FIFO (created by `makefifo`)
As far as I know, process substitution in bash and FIFO (created by mkfifo) are both named pipes. They both seem viable solutions for communication between processes. I was wondering how to decide ...
0
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1answer
36 views
When does a command in a process substitution or FIFO start and finish running?
When does a command in a process substitution in bash start and finish running?
E.g.
when does command1 in command2 >(command1) start and finish running respectively?
when does command3 in ...
1
vote
1answer
523 views
What is the purpose of using a FIFO vs a temporary file or a pipe?
From APUE
FIFOs can be used to duplicate an output stream in a series of shell
commands. This prevents writing the data to an intermediate disk
file (similar to using pipes to avoid intermediate ...
3
votes
1answer
500 views
How does this command work? mkfifo /tmp/f; cat /tmp/f | /bin/sh -i 2>&1 | nc -l 1234 > /tmp/f
Today I was reading the nc man page and stumbled on this command. I know that:
mkfifo /tmp/f is creating a named pipe at /tmp/f.
cat /tmp/f is printing whatever is written to that named pipe
and the ...
2
votes
1answer
628 views
pipe data into process that's already started
Say I start a node.js process like so:
node script.js &
is there a way to pipe data into that process after it has started?
normally, we do this:
cat <file> | node script.js
but the ...
