Shell Script Help

Question

I'm an IBM guy and I was assigned this MAC projet. I'm a MAC noob. I have a multi-user eMac. The user account folders are blown away when the computer shuts down leaving just the root accout and default account. I included a new javapolicy file in the default user account. A file called java.policy resides in the user home folder at log in (/users/johndoe/java.policy) for every new user that logs in. I need to create a logon shell script that finds the java.policy file in their home folder and renames it .java.policy to make it hidden. Remaming it in the default profile is not an option, and I don't know who will be using the computer at any given day. Can someone help me with the code.
#!/bin/bash/
I'm clueless, thanks for the help

Answer 1

The generic bash rename syntax for your specified command is:
mv /Users/shortuser/javapolicy /Users/shortuser/.java.policy
Here's a typical script:
#!/bin/bash
mv /path/to/source/.java.policy /Users/shortuser/.java.policy
The most direct mechanism would be via a computer login preference and workgroup manager, setting up a script that executes at user login. That script is invoked at login and can copy over or create the required file. Another of the usual techniques for executing commands at login is the so-called [login hook (HT2420)|http://support.apple.com/kb/HT2420], though if you're using Open Directory (OD) or OD with Active Directory (AD), it'll probably be better to go that way than the login hook.
Other discussions [here|http://arstechnica.com/civis/viewtopic.php?f=20&t=416343] and [here|http://www-personal.umich.edu/~lsiden/tutorials/signed-applet/signed-appl et.html]
I'd tend to expect to see the policytool used for this file, too. Launch Terminal.app and see +man policytool+ for details on that.
I'd also tend to expect to see this sort of stuff established within the system-wide policy module from the JRE that's usually located in [the system library directory |http://stackoverflow.com/questions/4372060/java-security-file-location-on-mac- snow-leopard] (/Library/Java/Home/lib/security/java.policy) and not with a per-user setting, too, and that's a rather different approach than populating the per-user settings. (But then I'm not a Java geek.)
FWIW, it's "Mac" and not "MAC", it's Unix, and files and directories doesn't get blown away unless there's a problem somewhere, or unless this is a school or kiosk or other environment that's using specific system-reset processing. And if there's system-reset processing here, then you'll obviously need to work within that. That processing is usually associated with OD, hence the earlier pointers. (And if there's this sort of reset processing going on, there's usually a reason for it, I'd probably try to keep as much sensitive stuff out of the local directories as I could reasonably manage.)