While working on machine xyz (could be linux or windows) - I need to start an executable program on another windows machine (just trigger would do).
How could that be done.
As per the comments provided, did the following purely on trial basis:
- Ran a custom listening tcl script on target machine (this was monitoring a shared file for writes) - also trying to use the win task scheduler to make it run each time user logs in
- On another machine that was to send command to the remote machine for exe execution, wrote a tcl proc to write to the shared file mentioned above
Thus whenever the file was written to, the script running on the target machine read the instructions and executed accordingly.
This is working for now, there are a few issues i am still facing but I think will get better eventually.
Related
I have my GCP machine that is scheduled to switch on and run from 6hrs in the morning to 12hrs. I am trying to automate the script once the machine is on, so I am scheduling a job on 6:30 hrs.
But what I observed is that UIPath Robot doesn't automatically get connected unless I open an RDP session and then manually open UI Path Assistant to connect it with orchestrator.
I also tried to create a bat script and schedule it with windows startup. But that fails to run as well. To verify my startup script I added two commands:
<verification script sending mail on startup> && <UIPath Script>
I tested this script manually in RDP session and they did run sequentially as expected. But when I added it to auto-scheduling in gcp, only the first script actually ran (<verification script sending mail on startup>) and the second one (<UIPath Script>) just didn't.
Moreover I did put the bat file in Windows Startup Folder but again that also required me to sign into the system using RDP session for it to run.
From my understanding, the UIPath Script (XAML) in order to run needs the system to be switched on 24/7 and then it connects to orchestrator and then we can schedule the process based on the time, but then my maching will be idle for lots of ineffective hours.
Secondly, going by the .bat file to be as a startup script also fails as in order to run the script, it needs the user to be logged in which doesn't happen. Though other scripts such as .py files run smoothly so I lose here as well.
Finally scheduling my bat file through windows startup feature does work but then it's also of no use as for it to start also I need to open an RDP session and log in.
Does anyone know the workaround for this?
I'm using qemu to replace bochs (since it doesn't update anymore)
In bochs, I can save the running settings into files and reload it. Furthermore, there will be a listed table of running options while boot up.
I'm wondering if I can do the same with qemu, save running settings such as cpu model, and other stuffs into some files and reload it next time I run emulation.
And if there exists a full listed running option table like thing for me to have a complete view on which options I can set.
Thanks a lot!
For this sort of UI and management of VMs you should look at a "management layer" program that sits on top of QEMU. libvirt's "virt-manager" is one common choice here. A management-layer will generally allow you to define options for a VM and save them so you can start and stop that VM without having to specify all the command line options every time. It will also configure QEMU in a more secure and performant way than you get by default, which often requires rather long QEMU command lines.
QEMU itself doesn't provide this kind of facility because its philosophy is to just be the low-level tool which runs a VM, and leave the UI and persistent-VM-management to other software which can do a better job of it.
I'm working on a CUDA application I'd like to profile. Up to now all I've used is the command line profiler, nvprof, which just displayes the summarized statistics.
I thought about using the GUI profiler, NVVP. The problem is that the remote Linux node I'm running the application on doesn't have anything GUI (even X.org). Moreover, even if I managed to get some X11 stack on the remote node, keeping my own laptop alive for the whole time of the profiling would be, well, tedious.
I tried collecting all the needed information in the following way:
nvprof --analysis-metrics -o application.nvprof ./myapplication
Then I copy the output file onto my laptop and view it in NVVP. This has three problems, though.
First of all, I don't get any file transfer information when I load the output file into NVVP. It's not shown at all in the NVVP window.
Secondly, the call graph is completely distorted. The gaps between kernel launches are at least 100x bigger than the kernel durations, which makes any dependency and flow analysis impossible.
Lastly, my application uses a lot of the GPU memory. During the profiling the device gets out of memory, which is not the case during the standalone run.
How should I properly profile my CUDA application on a headless node?
NVVP supports headless nodes as a first-class citizen. Remote profiling is a major feature of NVVP.
The way this works is that NVVP runs on your local GUI-enabled host machine and invokes nvprof on the headless machine, generates the required files there, copies the files over, and opens them. All of this happens transparently and automatically. You can run further analyses from NVVP as usual and it will repeat these steps for you.
To use remote profiling, open NVVP, then File->New Session. Add a Connection instead of using Local, putting in details of the headless machine. Click on Manage... to point NVVP to the toolkit path on the remote machine. Once this one-time setup is done, enter the path to the executable and run as usual.
You can read about remote profiling in the relevant documentation.
I have an Access DB app that exports a table (to XLS) then FTPs to our FTP server over our VPN. This routine has been working for several years, until ~yesterday. I am not sure what could have changed to break this function.
This is not really an Access DB issue as I see the same "Closed Connection" when manually attempting to FTP PUT at the Windows command line. Other users of the Access app (VPN and local) are not seeing this same issue.
I did receive a Win10 Security update this week - possible this affected my firewall settings?
Any suggestions where to begin? Googling suggests to portforward Port 20/21, but this seems to have no effect either.
Thank You!
Note 1: I do use WinSCP for passive transfers for another specific task to FTP to a 3rd party who requires passive transfers. Some of our users in India are unable to use this tool reliably, so I am hesitant to convert this basic function in my Access app as it works everywhere but my local machine.
Note 2: I attempted to add "QUOTE PASV" before a command line transfer with no effect. As I am reading, Windows FTP utility does not support Passive transfers
Note 3: FileZilla can see and transfer to the FTP server using "Plain FTP" mode. Interesting, but I really need this to work via command line without requiring a 3rd part app installation.
Note 4: I uninstalled the Win10 Security Update - No effect
my old father is using ubuntu-gnome. He has no static ip address. In order to perform remote administration, I need to know his ip. I was using dyndns free account (configuration in the adsl modem), but this will stop working in a couple of days.
I would like to run a script each time he logs in to publish his ip on my website. I have tried to put a script on the boot, but the network is not available. It seems that it is gnome 3 that starts the network, but I do not know much about gnome 3.
How should I do to have my script run automatically as soon as the network is available ?
One possible non-elegant solution for this is to put your script in his cron to run every X minutes :)
Looking to mine /etc/NetworkManager/ looks like there is a folder dispatcher.d that I think it'll do what you want. Just experiment with a bash/perl/python w/e script in there set the permission appropriately. You can find the UUID in the system-connections/ folder. More information is available in man networkmanager.
EDIT: Look what I found: https://askubuntu.com/questions/13963/call-script-after-connecting-to-a-wireless-network. Seems like this is exactly what you want.
The easiest way is to use another dynamic DNS service. I used to use my own. You could also put curl or wget command to cron or create a systemd service that will call that command periodically. As a target you would have to use your machine with a web server where you can see the IP in your logs.
It is not Gnome that connects the network, it is a system service called NetworkManager. It tries to connect at boot if possible. In some cases it waits for wireless signal, in other cases it waits for a user password. I recently verified that in Fedora, NetworkManager properly implements the systemd's network-online.target but it may have yet to be fixed in other distributions, see the upstream bug report.
https://bugzilla.gnome.org/show_bug.cgi?id=728965
If you want to run a system service just after boot, you need to use:
[Unit]
...
Wants=network-online.target
After=network-online.target
You could also just run a script that calls nm-online at the beginning to wait for the network connectivity if you can expect the connectivity to come up in reasonable time, otherwise it times out. Such a script can be run from any environment including a user session.
And, as noted already, you can put a script into /etc/NetworkManager/dispatcher.d that will be called on any network configuration change and such a script can then filter connection up events and start the notification script.