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1-liner would be something like watch -n 10 "pgrep konsole || kdialog --msgbox 'konsole no running'"
namely :
watch to repeat a command at interval, e.g. every minute (could also be crontab)pgrep to check if a process is runningkdialog on KDE to send a message to the current user (plenty more ways)You learn something new every day here ;) The good thing about kdialog is you can't miss it. Thanks.
With pleasure. I discovered kdialog just recently too as until now I used notify-send but as you are using KDE this gives you a lot more options.
If you are into this kind of things check also dbus or KWin, there are a LOT of fun and powerful ways to interact with KDE.
i use syncthing, and start it via the systems service. i found it reliable. systems has a feature by which you can get notified on error (look up the onerror key), you might be able to do what u need with that.
alternately, you can run a systemd timer that runs periodically and notifies you when your condition is met. if u want a pop-up, use zenity etc.
By systems service you're talking about systemd, right? I found this guide that sets up syncthing as a systemd service.
Archwiki has a different one though.
And as the Archwiki alludes to, there's this Syncthingtray tool that can be set up to show notifications.
Yeah, autocorrect isn't great with technical terms. I meant systemd. I followed Arch's instruction, and just enabled the services via systemctl --user enable syncthing.service
I have tried Syncthingtray and Syncthingy. I found the former did too much that I never used, and the latter was an unnecessary process doing very little while always running and adding another icon to the tray. For me periodic checking with a script is enough and more efficient for the rare situation where Syncthing crashes of fails to start.
They do mention a plasmoid for KDE plasma, although according to their documentation that requires distro specific packaging. For Debian it looks like there's a community package (right side).
EDIT:
Doesn't look too busy imo.
Normally you would want automatic restart rather than a user alert. These days you'd do that with systemctl, see the docs.
True for most scenarios. Specifically with Syncthing, I find that it rarely fails and when it does there are good reasons and I need to do something about it (eg I used the wrong version config.xml recently trying to migrate between Syncthing setups).
Hello! I don’t know of a desktop watchdog application that will do this for you, but you may be able to achieve this with a simple cron job. Probably just an hourly crontab entry that looks for a running process with the right name, and uses something like notify-send to send an alert if it’s not found.
I’ll jump on the computer and have a quick play, though I run gnome not plasma so I don’t know how well it will translate.
I know you're looking for a desktop solution, but here's something that you can try in case you can't find one -- I'm betting that having a solution is better than having none!
So I just had a quick muck around:
pgrep to detect if a process with a given name is running/dev/pts/0 to trigger a desktop notificationAs a test, the following command will look for a process called syncthing and send a desktop notification if it can't find it:
pgrep syncthing || echo "Syncthing is not running > /dev/pts/0"
To set up a cron job:
crontab -e (if you need to pick an editor, nano will probably be your best bet, it's easiest to use)0 * * * * pgrep syncthing || echo "Syncthing is not running" > /dev/pts/0
0 * * * * sets up the schedule (on the 0th minute of every hour, every day of the month, every month, on every day of the week)If you ever want to get rid of it, just open the cron file again (crontab -e) and remove the line.
I gave this a go on KDE under Wayland and it seems to do the trick. Good luck, I hope you find what you're looking for!
[edit-1] added step (2) to install libnotify-bin in case you don't have it already.
[edit-2] added XDG_RUNTIME_DIR to step (4)
[edit-3] removed references to libnotify, replace with /dev/pts/0 (Nice one, @sun_is_ra@sh.itjust.works !)
I went for this one and it works with both notify-send and /dev/pts/0. Not sure why it is better, but I opted for the latter. Simple, lightweight and versatile, suitable for any process.
Any KDE Plasma users reading this, to enable notifications history for these you can follow the instructions here. Many thanks everyone.
It doesn't work for me (using plasma). Also it seems to be using DBUS which I am not sure if it will work within a cron job.
A simple solution that works for me is something like this:
echo hello > /dev/pts/0
Oh very neat, that works great! A much better solution.
Good call on DBUS. Setting XDG_RUNTIME_DIR seems to be enough to fix it up, I'll update my other response.
I imagine dbus-monitor should work with cron but probably if starting once DBUS is actually running (so not sure @reboot would be sufficient)
Specifically for Syncthing, there's Syncthing Tray. It'll put a little icon on your icon tray (or since you're on KDE you can use the Plasmoid and put it wherever you want) and you can configure it to change colors depending on the status of Syncthing, send notifications when it finishes a sync or can't connect, see a detailed view of the sync status and the folders, etc.
It's very customizable, I've been using it for a while. Check it out!
You could write a cronjob uitilizing notify-send?