tem doesn&#39;t exist\n&quot;.echo()
}

# Batch file size calculation
files = [&quot;file1.txt&quot;, &quot;file2.txt&quot;, &quot;file3.txt&quot;]
total_size = 0
i = 0
while (i &lt; files.length()) {
    info = f.info(files[i])
    if (info[&quot;$TYPE&quot;] == &quot;FILE&quot;) {
        total_size = total_size + info[&quot;$BYTES&quot;]
    }
    i = i + 1
}
&quot;Total size: &quot; + total_size + &quot; bytes\n&quot;.echo()
</code></pre></div>
<h3 id="file-splitting-operations">File Splitting Operation