Recursively replace a pattern in files

mr

#!/bin/bash

if [ -z "$1" ]; then
    echo "mising argument: query"
    exit 0
fi

if [ -z "$2" ]; then
    echo "mising argument: replace"
    exit 0
fi

find . -depth -name "*${1}*" -execdir rename "s/${1}/${2}/g" "{}" \;