This is how you can use update-password-alias programmatically:
1. create a file for the passwords (password.txt), with the following entries:
AS_ADMIN_PASSWORD=<admin password>
AS_ADMIN_ALIASPASSWORD=<alias password>
2. asadmin update-password-alias --passwordfile <passwordfile.txt> -u <admin-user> -p <admin-port> aliasname
Note: to use update-password-alias command, you must have a password alias created using "create-password-alias" command first.
Please read Kedar's article on "Aliasing of Passwords in AppServer":
http://wiki.glassfish.java.net/attach/GlassFishAdministrationPages/aliased-passwords.html
HTH,
Jane
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