#!/usr/bin/env bash
# Arrays with proper quoting

files=('first file.txt' 'second.txt' '*.log')

printf 'There are %d entries\n' "${#files[@]}"

for file in "${files[@]}"; do
    printf 'Entry: <%s>\n' "$file"
done

files+=('new file.csv')

printf 'All entries: <%s>\n' "${files[@]}"