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6
  • I tried this but not worked. I am writing text to pipe but command not printing any output to stdout. Also I want to get 1 one as output when I write 1 to named pipe not all of the content of numbers.txt Commented Dec 3, 2016 at 20:36
  • @mesuutt It should be fine. Make sure you're indeed writing the the same pipe as you read from, so namely that both terminals are in the same directory. Use pwd if needed. Commented Dec 3, 2016 at 20:54
  • cat myfifo works as expected but cat myfifo | grep -f - numbers.txt or grep -f myfifo numbers.txt not printing anything to stdout. I have grep 2.25 version. Commented Dec 3, 2016 at 21:46
  • @mesuutt Same as me. Which version of Bash do you have? Commented Dec 3, 2016 at 21:58
  • I tested on bash 4.3.46 and zsh 5.2 on Arch linux. Commented Dec 3, 2016 at 22:06