#!/bin/sh
for i in "$@"; do
    if grep -q FLIGHT $i; then
       num=`head -1 $i | awk '{ for (i = 0; i < NF; i++)
       	   if ($i == "FLIGHT")
	       printf ("%03d\n", $(i+1)); }'`
    else
	num=`echo "$i" | sed 's/^.*flight-//' | sed 's/\..*$//'`
    fi
    newname=`echo "$i" | sed 's/flight-[0-9][0-9][0-9]/flight-'"$num"'/'`
    echo $num "$i" "$newname"
done | sort -rn | sed 's/^[0-9][0-9]*//' | while read old new; do
    if [ $new = $old ]; then
	: echo correct: $old
    else
	if [ -f $new ]; then
	    if cmp $new $old; then
		echo "$old is a duplicate of $new"
		echo rm $old
	    else
		echo "$old: $new already exists"
	    fi
	else
	    echo mv $old $new
	fi
    fi
done