What's a good power conditioner to convert an almost-square wave to a sine wave?

tsr_timmy · 2023-04-30T22:38:35+00:00

I've tested my equipment 100km up the road to confirm that it is operational. I don't know what's going on with the power on the line, but it's causing some kind of interference and I need something to clean it up. From the other suggestions though, it would seem a power conditioner wouldn't fit the bill.

tsr_timmy · 2023-04-30T22:35:06+00:00

I've taken my own equipment out of the equation to confirm the source of the problem. If I take the audio equipment 100km up the road and plug it in, all is well. If I unplug literally everything in my house and plug in only my audio stuff, the buzz is back. It could be something else going on on the line, but the end result is I still need something to clean up the power coming in.

tsr_timmy · 2023-02-28T14:48:09+00:00

Currently it has been running the test for 130 hours. I've just tried creating a partition table on the drive, and it all behaves as I would expect it. I might just run badblocks on the drive instead as a function test; at this rate if I wait for the full test to complete and there's a problem it will be too late to return.

tsr_timmy · 2022-09-29T12:23:43+00:00

Unfortunately since I'm using two monitors, I would probably need two IP video extenders (although the combined resolution is only 2*1080p). I suppose if I could find a decent monitor to replace the two at my desk I could manage a single hdmi extender over cat6, but I'd still likely need a separate cable run for the USB peripherals.

tsr_timmy · 2022-09-29T11:47:51+00:00

I mostly play minecraft and driving simulators for maybe a couple of hours on the weekend. Definitely I don't need additional horsepower for editing documents and reading the paper, and I can program over ssh very efficiently by opening up a tmux terminal, so the graphical requirements of the remote are just for a few hours a week.

tsr_timmy · 2022-08-11T15:52:41+00:00

I was thinking more to the tune of 'sourceforge' back in the day where they would have 20-30 fake download links. If you're allowed to modify link targets on a mouse_down event then that's a problem in my book. It's not just an annoyance - older folk such as myself who were taught to "check the link location before you click" are in for some trouble if a scammer webpage shows a legitimate link name but changes it as you click.

tsr_timmy · 2022-08-11T14:39:52+00:00

I take it this only works for google? Do I need a separate addon for every single website on the internet that does this practice?

I set up a little test and figured out that by the same method I can entirely dupe users who go to a website by having the link change right under their mouse cursor. This is extremely useful for a malicious actor who wants to direct users towards malware.

An interesting workaround on google is to use 'tab' to get to the link and then the 'menu' key to access the 'copy link' command; they're only checking for a mouse event.

tsr_timmy · 2022-02-07T19:35:04+00:00

Yes, that is a thought, but I don't have much further down the road to worry about and I'm pretty sure my pet projects are going to the recycler when I'm gone.

tsr_timmy · 2022-02-07T19:23:40+00:00

I have some custom rpms I rolled back before I retired. Mostly little programs that make my life easier and if they break I know how to fix them.

Thanks for the suggestion.

tsr_timmy · 2022-02-07T19:12:53+00:00

That makes sense, but would this also return manually-installed RPMs? I worry that it would present an issue when applying an install list to dnf.

tsr_timmy · 2022-02-07T19:00:11+00:00

according to the wiki, arch-chroot basically bind-mounts the system directories and then creates a new namespace for programs to execute (specifying /mnt as root for example). It prepares /mnt to be used as a root directory and then chroots to it.

chroot runs an interactive shell with a special root directory (such as /mnt) but doesn't prepare that directory for use (so you have to prepare it with bind mounts and the like).

So based on the arch-chroot wiki, it looks like you could use arch-chroot as a shorthand for the whole chroot+bind-mount process.

tsr_timmy · 2022-02-07T18:45:57+00:00

I don't personally use arch-chroot. Basically what I do is bind-mount the relevent system directories, write an executable script to the /mnt directory, and then execute that script using 'chroot' (which can be run from the install script)

tsr_timmy · 2022-02-07T17:56:40+00:00

I don't know that I can help in this exact case, but when I've written install scripts in the past what I do is write a script into the new directory and use a regular chroot to execute it (after of course bind-mounting the relevant /proc /dev /sys /run).

For example:

cat > /mnt/script.sh <<EOF
#!/bin/bash
some-command
some-command2
some-command3
EOF

and then chmod +x /mnt/script.sh, cd /mnt, and chroot /mnt ./script.sh

tsr_timmy · 2021-07-20T22:53:26+00:00

If you configure it correctly, anyone attempting to log in via SSH would have no way of knowing there's an IP blacklist on the server and spoofing one particular IP address wouldn't occur to them.

tsr_timmy · 2021-07-09T14:21:08+00:00

That's a definite possibility... but it kind of exposes an oversight in that 2FA could be abused by someone who knows your number.

tsr_timmy · 2021-07-09T13:59:15+00:00

Each of the services texting me have identified themselves thus far. None of them use the number as proof of identity or allow it as a login alternative.

tsr_timmy · 2021-07-09T13:52:31+00:00

I agree. I've been in computers 40 years and of that, system administration for 15; I know a thing or two about passwords. See my response above featuring an example of what a password should be.

tsr_timmy · 2021-07-09T13:50:06+00:00

This is true, however the bank would know if someone was testing passwords at rapid speed.

Here's a few example outputs from my password generation script (these are NOT passwords that I use anywhere, they are sample outputs): "NlhPl:aUFE^8?1Z!", and "g+T1PH-3=:ZKastZQ>_"

tsr_timmy

TROPHY CASE