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From: | Paul Eggert |
Subject: | bug#6900: mktemp: want option to make a fifo |
Date: | Mon, 23 Aug 2010 16:49:59 -0700 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.11) Gecko/20100713 Thunderbird/3.0.6 |
On 08/23/2010 03:55 PM, Eric Blake wrote:
We may be able to help you efficiently re-write your existing code into an equally manageable but more portable solution using existing tools, or it may help to convince us that the shorthand is truly useful.
I agree that a full example would be helpful. Here's a quick sketch of a shell script that solves the stated problem without using a named fifo. Without the full example it's hard to say whether this approach would work well in the existing code. #! /bin/sh nl=' ' a() { for i in 0 1 2 3 4 5; do echo B$i; echo C$i; done; } b1() { start_b2=$nl while read command do case $command in (C*) printf '%s\n' "$command" >&3;; (B*) printf '%s\n' "$start_b2$command"; start_b2=;; esac done } maybe_b2() { read line && sed 's/^./D/'; } c() { sed 's/^/E/'; } a | (b1 | maybe_b2) 3>&1 | c
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