line looper

looper.sh

#!/bin/sh
# use line-lite.sh: https://brianin3d.wordpress.com/2008/05/14/scripting-with-ansi-color-codes/
TMPFILE1=`mktemp /tmp/${tempfoo}.XXXXXX` || exit 1
TMPFILE2=`mktemp /tmp/${tempfoo}.XXXXXX` || exit 1
while `true`;  do
  COLS=`stty size | awk '{print $2}'`
  eval "$@" > $TMPFILE1
  clear;
#  diff -W$COLS -y $TMPFILE1 $TMPFILE2
  diff --left-column -W$COLS -y $TMPFILE1 $TMPFILE2 | ~/bin/line_lite.sh ".*|.*" bright ".*<.*" green ".*>.*" red
  mv $TMPFILE1 $TMPFILE2
  sleep 2;
done