joins avi files properly so that they may be skipped

join-avi.bash

#!/bin/bash

echo "The following files will be joined:"
find -maxdepth 1 -iname "*.AVI" -type f | sort

echo ""

echo "Output Filename:"
echo "(may also be an absolute path; omit"
echo "quotation marks unless you want them"
echo "to appear in the path/filename)"
read -e -p ""
echo ""

if [ -f "$REPLY" ]
then
  rm -i "$REPLY"
  echo ""
fi

if [ -f "$REPLY" ]
then
  echo "Exiting"
  exit 1
fi

TMP=`mktemp`

echo "Joining files into temporary file..."
find -maxdepth 1 -iname "*.AVI" -type f -print0 | sort -z | xargs -0 cat  > $TMP

echo "Rebuilding index and saving to destination..."
mencoder -forceidx -oac copy -ovc copy $TMP -o "$REPLY" > /dev/null

echo "Deleting temporary file..."
rm -f $TMP

echo ""
echo "Done."
echo "Joined copy is located at: "
echo $REPLY