Iksas

Recover off-screen windows

Sometimes, in Windows 10/11, an application's window can get "stuck" off-screen, and cannot be moved.

The following steps can be used force the window to move to the currently used screen:

Activate the window in the task bar
Press Alt + Space to open the window's menu
Press M
Press Enter

Fast PDF full-text search

The following setup can search the contents of 7000 .pdf files in 0.08 seconds on an i7-1260P (less than 12 microseconds per PDF).

To do so, each .pdf file is first converted to a .txt file, which is stored next to the .pdf. If necessary, OCR is performed. This process takes hours.

As soon as all .txt files are created, they can be quickly searched with ripgrep.

The solution is a bit hacky, but it's what I use at the moment. I'll probably benchmark it against ripgrep-all in the future, and maybe switch to that.

Wireguard multi-tunnel auto-connect in Windows

Set up multiple simultaneous Wireguard tunnels that auto-connect on boot in Windows.

Install the Wireguard tunnels

Install the Windows version of Wireguard and import the two tunnel .conf files.

Set required registry key

Fixing systemd sandboxing errors

Crash with `status=31/SYS`

user@ansible-test:~ $ journalctl -u mongod.service | tail
[...]
Aug 08 17:29:42 ansible-test systemd[1]: Started mongod.service - MongoDB Database Server.
Aug 08 17:29:43 ansible-test systemd[1]: mongod.service: Main process exited, code=killed, status=31/SYS
Aug 08 17:29:43 ansible-test systemd[1]: mongod.service: Failed with result 'signal'.

Fixing `wg-quick` on macOS

On some macOS setups, wg-quick up does not work correctly if the Wireguard configuration includes a DNS server address.

When this error occurs, wg-quick up exits with the following lines, and the Wireguard tunnel will not work:

$ sudo wg-quick up wg0
...
[#] rm -f /var/run/wireguard/utun3.sock
[#] rm -f /var/run/wireguard/wg0.name

git cheat sheet

Search the reflog for info about a commit (only works if the relevant info hasn't been garbage-collected):

git reflog --no-abbrev | grep <HASH>

List the number of lines in each file:

git ls-files | xargs wc -l

My Firefox user.js

Type about:profiles into the URL bar to display the profile folder path.

Copy the user.js file to the default profile's root folder.

After restarting Firefox, about:config can be used to check if the settings have been applied correctly.

Moodle 4.0 custom CSS

The following CSS can be used make the layout of Moodle 4.0 more compact.

Use it with a browser extension that permits the application of user-defined CSS, for example Stylus (on Firefox or Chrome).

Pi-hole blocklists

The following file contains blocklists I use with my Pi-hole installations.

It blocks with minimal false positives:

ads / spam / telemetry / tracking
malware
phishing and fraudulent websites
torrents

	import argparse

	...

	if __name__ == "__main__":
	# parse CLI arguments
	parser = argparse.ArgumentParser(description="Search popular Hacker News posts")
	parser.add_argument('-u', '--update', default=False, help='update the database', action='store_true', dest='update')
	parser.add_argument('-d', '--domain', default=False, help='search for posts from a domain', action='store_true', dest='domain')
	parser.add_argument('query', nargs='?', help='the search query')