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#!/bin/sh
[ "$#" -lt 1 ] && echo "error: invalid usage: requires an arugement" && exit 1
set -e
bak="$1.original"
if [ -e "$bak" ]; then
echo -n "$bak exists! replace? (y/N): "
read input
[ ! "$input" = "y" ] && exit 0
fi
cp "$1" "$bak"
echo "info: created backup file $bak"
[ -z $EDITOR ] && echo "error: EDITOR is not set. attempting to use vi" && export EDITOR=vi
$EDITOR "$1"
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