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Old 02-06-2010, 12:45 AM   #1
Registered: Jul 2006
Location: Louisville, KY
Distribution: Fedora 12, Slackware, Debian, Ubuntu Karmic, FreeBSD 7.1
Posts: 443
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screen: using 'cat > fifo' in .screenrc

I'm setting up .screenrc, and I'm trying to set up a couple of screens as follows:

screen 1: cat > ~/fifo
screen 2: bash

~/fifo already exists...

This way, in screen 2, I can do something like this:

$ cat ~/fifo | tr a-z A-Z
then I can type

stop shouting!
into screen 1, and I'll see

in screen 2.

I'm having trouble setting up screen 1. Here's my .screenrc
startup_message off
screen cat > ~/.fifo
I start up screen, and it exits immediately:
$ screen
[screen is terminating]

when I run this at the shell, the fifo will block for input, and the process won't quit until I enter Control-D which closes the file. The process launched by .screenrc exits immediately.

I can run the command from within screen, operates just like it would in any other shell session...

... when 'cat > ~/.fifo' starts, launched within screen, I guess stdin is empty, so the process terminates immediately... is there a way of launching this in a way that leaves stdin open?


pipe, screen, screenrc

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