Hiya!
Installation is getting stuck with this message stating admin password is not set.
Version: 6.3 on RHEL 6.8
$ java -jar aem-author-p4502.jar -Dadmin.password=aem12345 -r author & >/aem-author/console.log
[3] 46165
$ Loading quickstart properties: default
Loading quickstart properties: instance
Low-memory action set to fork
Using 64bit VM settings, min.heap=1024MB, min permgen=256MB, default fork arguments=[-Xmx1024m, -XX:MaxPermSize=256m]
The JVM reports a heap size of 3564 MB, meets our expectation of 1024 MB +/- 20
Setting properties from filename '/aem-author/aem-author-p4502.jar'
Option '-quickstart.server.port' set to '4502' from filename aem-author-p4502.jar
Setting 'sling.run.modes' to 'author' from command line.
The admin password for this instance hasn't been defined yet.
Regards,
Van