How to launch a powershell script from itself after rebooting the computer? - windows

I was making a script to automatically install the LSPosed version of WSA that can be found Here and since it may need to enable Hyper-V/WSL it ckecks if they are enabled and if they aren't, it enables them and then reboot.
You can run the script again to complete the building/instalation but it would be nice if you could "schedule it" to execute on the next boot as well.
Is it even possible (it needs to run as admin user)?

Related

Install4j behavior difference for GUI and CLI mode

We have developed installer for CentOS platform there is one behavior that we have observed.
If we run uninstaller in GUI mode it starts execution of actions one by one during that if reboot happens, after reboot all files are present there and we can execute uninstaller again.
Same case for CLI
If we run uninstaller in CLI mode it starts it starts execution of actions one by one but if during that reboot happens, after reboot all files created by install4j are removed so we cannot execute uninstaller again as even uninstall script created by installer gets deleted.
Please comment on this behavior as ideal behavior for us would be the one seen in GUI mode.

Automatically update Windows fully

I'm working on a project where the goal is to be able to update a windows computer 100%. That means a program or a script that updates windows automatically with no user interaction at all. Ideally a standalone script that can be run from another script.
The reason: I need to update a lot of computers in my line of work. They can be at any patch level and everything from Windows XP to Windows 8. My goal is to start a script, wait/do something else and then find a fully patched computer.
I've solved a lot by finding ZTIWindowsUpdate.wsf in the MDT Task Sequence.
This can be used like this from an admin cmd:
cssript.exe ZTIWindowsUpdate.wsf
My problem so far is that the computer requires a reboot between some of the updates. Probably because of dependencies. ZTIWindowsUpdate.wsf needs to be run as administrator and i can't seem to find a solution to start it as administrator at reboot. Additionally if I get the script to run on startup, how do I stop it, and how do I know when its time to stop it?
Can someone help med with a foolproof solution to this problem?
Thanks!
Don't need to FULL update a Windows OS, most of the updates are not needed, most updates are not relationated with security and we can survive without they, you need to read the description of each update to understand what changes made. FULLY updating a Windows can be negative point of performance in several scenarios.
All that you need is to download your desired updates, then store it in a folder with this batch script:
#Echo off
For %%# in (*.msu) Do (
Echo: Installing update: %%#
Wusa "%%#" /quiet /norestart
)
Echo Windows Update finished.
Pause&Exit
Also you can compress the folder (the updates + the script) into a Self executable with winrar to distribute it as a standalone file.
Info:
Wusa.exe is the Windows Update commandline application.
The files are processed one by one, not all at once.
The quiet switch makes the installation silent.
The norestart switch don't restart after installing the update even if needed.
If a update is installed in the OS then is not installed again, without getting an error window or stopping the execution of the script.
PS: See Wusa /? for more switches.
I hope this helps.
UPDATE:
Another alternative is to download and install ALL the updates with WSUS utility.
http://download.wsusoffline.net/
The updates for Win7 x64 (for example) are stored here: "...\wsusoffline\client\w61-x64\glb"
PS: The "DoUpdate.cmd" batch file in the "CMD" dir of the application is what you need if need to automate the task in "background".
The simplest solution to the problem you're describing is to get your script to configure automatic logon for the built-in Administrator account, then add itself to the Startup folder. You do need to know (or reset) the Administrator account password to use this option.
There are many other possibilities, some examples are: use a startup script and psexec; use srvany to create a service that runs your script; use task scheduler to schedule your script to run automatically, either interactively or non-interactively; disable WUA, configure automatic logon for the account you're using, and add your script to the Startup folder.
Note that you'll save time and bandwidth if you can set up a WSUS server or (even simpler, and cheaper if you don't already have a Windows server) a transparent caching proxy. However this won't avoid the need to reboot during the update sequence.
You may find my script useful as an alternative starting point to ZTIWindowsUpdate.wsf, if only because it is smaller and simpler to understand.
The moast time consuming thing of a WindowsUpadate procedere is the download of the Setupfiles for the Updates. You should look into a lokaly in the network installed WUS (Window Update Server) and make sure the PC updates from the WUS. If the PCs are all in a ActiveDirectory Domain then the needed settings are very easy to manage. But if not this setting could make a simple batch-script which uses the normal windows update routine.
Another solution would be to make batch-scripts where you install the predownloaded updateFiles with the silent-switch. Allmoast every setup.exe has such a silent switch. If a update isn't needed the update stops for this upload automatically. I'm using such a batch-script wizzardy now for quiet a time now.
PS: If the Computer were from one/your compagny you should "thank" your predecessor for many hours of work to the far future.
PPS: By the way XP and Vista should be phased out. They are now realy old and for XP the already extended supporttime is axed by Microsoft next year and should only used if it is realy realy needed for one small situation where a Windows 7 isn't a solution in any way possible.
To run
cssript.exe ZTIWindowsUpdate.wsf
as Administrator after reboots, you can create a Task in the Task Scheduler with the proper permissions and to run on boot. =]
An automated way is, WuInstall. I'm using it for 1 year now and it's perfect, it actually does what it should. It's a command line tool which automatically searches, downloads and installs the updates. There are several "switches" that let you allow to customize the process. Thanks to the rebootcycle-switch for instance, updating a newly setup PC is done with ease - in one go.
Here's another way ------
Perform instructions below at your own risk:
To automate windows update these instructions may or may not work for your system however it appears to work to an extent for Windows 7 as these instructions were tested on Windows 7.
MUST READ: 1. If the step below does not work verify then you are most likely part of a domain and your security policy may not allow you to perform steps below! 2. UAC prompts were also disabled for the duration of the windows updates so the batch files can run without interruption; be careful to restore this to default when done
Caution this step will make your computer less secure, immediately remove this after your computer is completely up to date. Set a reminder for 24 hours later if need be:
1.
First you will have to make sure your computer automatically logs into a user. You can do this by clicking start menu, type "netplwiz", press enter or open the wizard, under the users tab, select your username, and un-check "require password", type your password, close this window.
2.
Create 3 batch files to start the automated process. (Open notepad paste each code into a separate notepad and perform a save as corresponding_file_name.bat)
One. Save as: any_name.bat then copy this batch file to your startup folder for the user you made auto login. (Click start > All Programs > Startup)
start "" c:\autoupdate1.bat
exit
Two. Save as: autoupdate1.bat then copy this to C:\ drive
wuauclt /detectnow
wuauclt /updatenow
reg query "HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired" > nul && shutdown -r -t 0
start "" c:\autoupdate2.bat
exit
Three. Save as: autoupdate2.bat then copy this to C:\ drive
ping 127.0.0.1 -n 61 > nul
start "" c:\autoupdate1.bat
exit
Restart or open the batch file in the startup folder and watch the magic begin!
3.
When it is completely done updating just delete the batch files from the startup folder & c:\ drive
Once again follow these instructions at your own risk as it can create an endless loop if you do not know how to stop this process by removing it from the startup folder or going into windows under safe-mode to remove the batch files
Final notes: If you run into issues running the batch files chances are you may have to look up how to disable UAC prompts for your Windows version

SCCM Distributed software install hangs

I am having issues getting distributed software from SCCM to install properly. This goes for both MSIs and EXEs. The software deploys properly and the respected installer, msiexec or setup.exe, start, and can be viewed in task manager, but the software never installs. The process actually stays open in task manager and never finishes. There are no errors in execmgr.log.
I have tried running from the distribution point, downloading and running locally, running with admin rights, and running as local user. I am at a loss.
I know one particular install requires you to click next once even though it has the command line switches to run a silent install. All distributed software from SCCM installs hidden from the client (even if the program is told to run Maximized), so Next can not be clicked. Is there a way around that?
The programs that are not installing all run fine when I put the same command into cmd.exe that I put in the Command line in SCCM.
Any ideas to try?
There is a way around it. AutoIT allows you capture events, but it only works consistently if you use keyboard shortcuts. Stay away from using the mouse at all, as it's not consistent. It will go through keep track of entered commands and execute them with the same timing as when you capture the commands during a trial-run of the manual install. Sometimes timing can be an issue, so you have to test.
Not a great way of doing silent installs, but every once in a while you just can't do it with MSI commands.

How to ask a remote windows machine to automatically launch an application?

I have a windows server 2003 up in the internet.
But sometime I need to restart it.
After restart, I want one of the applications to run.
I want to do this all programatically.
I can now remotely restart the server.
But the question is how can I ask that piece of software to be executed (more precisely, I want to execute a .BAT file to ask a tomcat to run)?
Because I don't want to manually log in to the machine and start that application. That is time consuming. Is there any possible way, once the machine is started, my application will be run as well?
If you're developing an application that should always be running on the server, you probably need to implement it as a Windows service. For C#, see the classes in the System.ServiceProcess namespace -- you will need to inherit from ServiceBase.
Alternatively, you can set the program to be run as a scheduled task on boot. See the Task Scheduler API to do this.
You can install Cygwin and then do it the same way we'd do it on a Linux box: via ssh, using keys.
OpenSSH is not part of the default Cygwin install, so be sure to select it. It's in the Net category.
Then, after you've installed Cygwin and sshd, read /usr/share/doc/Cygwin/openssh.README to learn how to set up sshd as a service, so it will answer requests automatically, without you having to start the ssh daemon manually.
Finally, set up keys, as described in the link above.
Part of the ssh protocol is a way to ask a remote machine to launch a program. Setting it up with keys lets you do it without needing a password.
You could try xCmd, which is a freeware app to run a command on a remote machine.

Run a script on Windows startup without a user logged on

This is a Windows 2003 (or later) machine that gets switched on every morning, but no one logs on until some hours later.
I want to use the time in between to run a backup script c:\script\backup.cmd
How can I start this unattended after the machine has come up?
I tried 2 registry keys, but this resulted in the script being run after a user logs on (which is too late):
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
In the end I used Windows TaskScheduler, who has such an option, but I was wondering if there is another possibility?
Short answer: GPEDIT.MSC (Start, Run, GPEdit.msc)
Windows 2000 and above [1] offer a computer Startup Scripts collection in the policy editor:
Computer Settings -> Windows Settings -> Scripts (Startup/Shutdown)
There's an equivalent logon script area (i.e. after computer startup, when a user logs on) in the User configuration bit.
Longer:
GPEDIT.MSC is the Group Policy editing console, and runs against the local computer's Local Group Policy store when it's used directly, so it's useful for setting local-only parameters. When using Active Directory, a similar interface is used to edit AD Forest-hosted group policy objects (GPOs), so the same settings are available across a bunch of machines.
The computer startup scripts run in the computer context, i.e. as LocalSystem, as you noted, so they often can't access network drives which require a certain user or group membership to work. When domain-member computers access network resources, they generally (with exceptions) authenticate using their MACHINENAME$ account - which lets you set Share/NTFS permissions to allow a computer to access those resources.
A startup script is a quick and easy way of getting a process running when the machine boots.
The computer startup process will be affected by the time it takes to run the program, though, so you might want to ensure you call it with the START command from a batch file, or specifying not to wait for the executable to complete in whatever script language you use. (the key point there is: run the script asynchronously unless it's critical, or doesn't need to be run asynchronously cos it will always take no time at all. Long boots = unhappy users).
Using a Win32 Service is an alternative option - you can use the SRVANY utility from the Resource Kit to "service-ify" pretty much any executable. VS.Net 2002 and later also let you build a managed service directly.
And Task Scheduler gets much more capable as of Vista/2008, able to run scripts at startup, on idle, and/or when Event Logs are generated or certain other conditions are met: it's pretty cool! Scheduled Tasks has the possible advantage of being able to specify the user account under which the task runs, if that's important to you.
Caveat Scriptor:
http://support.microsoft.com/kb/256320
Run Startup Scripts Asynchronously:
http://msdn.microsoft.com/en-us/library/ms811602.aspx
Vista Task Scheduler (what's new):
http://technet.microsoft.com/en-us/appcompat/aa906020.aspx
[1] Windows XP, 2003, Vista/2008, Windows 7/2008R2, Windows 8/2012, Windows 8.1/2012R2, Windows 10/Windows Server 2016. Everything. But NT4 didn't!
You have already outlined a good solution:
Setup a scheduled task to run at Start Up and allow the job to run when the user isn't logged on.
You can run a script at system startup using group policy gpedit.msc
The way you aleady do this seems fine to me; however if you want an alternative approach then services get started when the machine boots so you could write a service that detects if it's a new day (to allow for reboots) and if it is then run your backup.
If I was doing this as a service I'd use TCL because I know it and like it and it has an extension twapi that allows you to run a script as a service. Other scripting languages may well have similar facilities.
There is, if you're using Active Directory. If you can isolate the computer to its own OU or use WMI filtering, you could assign a GPO which has a startup script for the computer. This would ensure that even if someone went in via safe mode and disabled the Task Scheduler, upon startup and connection to the domain, the script would run.

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