Demonstrate how to work with anonymous and named pipes.
REF: 46_stdin_stdout_stderr/README.md
NOTE: If you have two processes tailing the pipe it will be first come first serve
It will block inputting to the pipe until something is connected to it.
# create a pipe
mkfifo pipetest
# pipes are designated 'p'
ls -la
# tail the pipe
tail -f pipetest
# send data to it
echo "hello world" >> pipetest # pipe a file in through stdin
mkdir -p ./out
export AUDIO_FILE=./sources/audiobooks/christmas_short_works_2008_0812_64kb_mp3/english_achristmastree_dickens_rg_64kb.mp3
cat ${AUDIO_FILE} | ffmpeg -i pipe:0 ./out/english_achristmastree_dickens_rg_64kb.wav
# pipe a file in through a named pipe
mkfifo audiopipe
cat ${AUDIO_FILE} > audiopipe
ffmpeg -i pipe:0 ./out/english_achristmastree_dickens_rg_64kb.wav < audiopipe- Send stdout to Multiple Commands here
- How to make ffmpeg write its output to a named pipe here
- Anonymous and Named Pipes in Linux here
- http://hints.macworld.com/article.php?story=20041025103920992
- https://zsh.sourceforge.io/Doc/Release/Redirection.html#Multios