bash script to remove spaces from Blender .mtl files and referenced asset files

despace.sh

#!/bin/bash
#set -x

remove_spaces() {
    directory=$1
    echo "Folder: $directory"
    pushd $directory >/dev/null
    find . -type f -not -name "*.obj" -not -name "*.mtl" | while read f; do
        base_name=$(basename "$f")
        spaceless=$(echo "$base_name" | tr -d " ")
        if [ "$base_name" != "$spaceless" ]; then
            echo " - renaming $base_name $spaceless"
			mv "$base_name" "$spaceless"
			# sed -ibackupfile "s/hi/yo/g" testfile  seemed to work before
            find . -name "*.mtl" | xargs /usr/local/bin/sed -ibackupfile "s/$base_name/$spaceless/g"
        fi
    done
    popd > /dev/null
}

for directory in $(ls ); do
    if [ -d $directory ]; then
        remove_spaces $directory
    fi
done