# NOTE: Those are backticks, not single quotes, around the delimiter
print <<`ShellOut`;
cd /path/to/dirs
tar -czvf dir1.tgz dir1/
tar -czvf dir2.tgz dir2/
tar -czvf dir3.tgz dir3/
mv /path/to/dirs/dir1.tgz /backup/dir1.tgz
mv /path/to/dirs/dir2.tgz /backup/dir2.tgz
mv /path/to/dirs/dir3.tgz /backup/dir3.tgz
ShellOut