# download 3.5.8 or neo4j-enterprise-4.0.0-alpha09mr02-unix
!curl https://neo4j.com/artifact.php?name=neo4j-community-3.5.8-unix.tar.gz -o neo4j.tar.gz
# decompress and rename
!tar -xf neo4j.tar.gz  # or --strip-components=1
!mv neo4j-community-3.5.8 nj
# disable password, and start server
!sed -i '/#dbms.security.auth_enabled/s/^#//g' nj/conf/neo4j.conf
!nj/bin/neo4j start