copy.setFileName(dest);
String targetTag = vfs.createFile(shell.getUserCtx(), copy);
if (vfs.hasContent(shell.getUserCtx(), file, true)) {
FileReadInfo read;
FileOpInfo readOp, writeOp;
readOp = new FileOpInfo();
readOp.filename = file;
readOp.tag = sourceTag;
writeOp = new FileOpInfo();
writeOp.filename = dest;
writeOp.tag = targetTag;
do {
read = vfs.read(shell.getUserCtx(), readOp);