Glassfish: Run asadmin from Java program

When you execute asadmin on a secure enabled server you have to provide admin username and password. This can be a bit of a PITA if you are calling asadmin from a Java program.
You have two options:

1. Create $HOME/.asadminpass:
   asadmin://admin@localhost:4848 BASE64_ENCODED_PASSWORD
2. Or you can pass the file with the password with every asadmin command:
1. Create glassfisg.password file:
   AS_ADMIN_PASSWORD=PLAIN_ADMIN_PASSWORD
2. If you are on Linux it is a good idea to make the file readable only to your user:
   chmod 600 glassfish.password
3. Execute asadmin command:
   $com.sun.aas.installRoot/bin/asadmin --user admin --passwordfile PATH_TO_PASSWORD_FILE list-applications

$HOME is a home directory of a user under which Glassfish is running.

$com.sun.aas.installRoot is the installation directory of Glassfish. It is only set on a Glassfish process.