Convert flv to mkv

converter.sh

#!/bin/bash

if [ "$#" -lt 2 ]; then
    echo "usage: ${0} <extension> <replace>"
    exit 1
fi

for f in *.${1}
do
	newname="${f%${1}}${2}"
	echo "[*] $f to $newname"
	$(avconv -i "$f" "$newname") || { echo "Can't convert"; exit 1; }
	echo "[*] $f to $newname"
	rm "$f"
done