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sed depends on -r to be rightmost flag to simplify the REG_EXTENDED test. (If a flag is 1, you can multiply it by the value you want and get that value else zero without a branch or conditional assignment.) So move -E one to the left so FLAG_r is 1 again, and add a [+Er] suffix instead of testing FLAG_r | FLAG_E in the users.
author Rob Landley <rob@landley.net>
date Fri, 06 Mar 2015 16:50:54 -0600
parents 2428870ce50c
children
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#!/bin/bash

# If you want to use toybox netcat to talk to a serial port, use this.

if [ ! -c "$1" ]
then
  echo "Usage: minicom.sh /dev/ttyS0"
  exit 1
fi

SPEED="$2"
[ -z "$SPEED" ] && SPEED=115200

stty $SPEED -F "$1"
stty raw -echo -ctlecho -F "$1"
stty raw -echo  # Need to do it on stdin, too.
./toybox netcat -f "$1"
stty cooked echo  # Put stdin back.