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Random Tech Tips
One of my e-mail addresses seemed to be targeted with a fishing / spam campaign. They tried to let me believe I needed to sign some important documents.
As I got up to 30 messages a day for it, it got a little bit annoying. Luckily for me they use the same e-mail address / domain as the “From sender” to look legit. So that’s something I can use to filter them out “at the front-door” using postfix.
Continue reading “Selectively bounce messages using Postfix”Sometimes you have a bunch of files, for example a bunch of images, which name consists of just a number and an extension. When you want to process them further sorting them will sometimes fail when they are not prefixed with a zero. That’s easily solved in a one-liner
Continue reading “Rename numbered files”Sometimes you encounter a device which is old enough that it needs an ActiveX control for set-up. Some old IP Camera’s for example need this. Technology however moved forward and a “new” browser, such as Microsoft Edge, does not support ActiveX.Do we now have a piece of “e-waste”?
Continue reading “Start plain old IE in Windows 11”In another Blog Post (Monitor certificate expiration) I showed a small script which checks local certificates for their expiration date and warns when it is near. This due to the fact that lets-encrypt does not send out warning mails anymore.
Checking a remote host is also something that a small bash script can do.
Continue reading “Monitor certificate expiration (hosts)”Lately I got a message from lets-encrypt stating they are ending the notification mails they send out to remind you of certificates expiring. As I do have lets-encrypt certificates which are not auto renewed because of the challenge mechanism I liked those messages.
But nothing that a small bash script can’t fix.
Continue reading “Monitor certificate expiration”Sometimes you want to create a quick snapshot of a few files / folders. rsync is a great tool for this. And sometimes you don’t want to copy the files because that takes up space and you might be copying them to the same filesystem. Hardlinking is quite a nice option in this case (if the filesystem supports it)
Continue reading “Hardlink with rsync”I’m making use of Ubiquiti AP’s and therefore use the Unify software to manage them. I have it installed within an “ordinary” vm.
The software normally uses a self-signed certificate. This is not a big issue as it is my local network.
However Chrome starts warning more and more and Safari doesn’t seem to like the self-signed certificate at all after the latest updates. So it became time to install a “proper” certificate.
This little article explains how.
Continue reading “Add a new certificate in unify controller”When running code you sometimes have the need to debug the progress of the statements. One way is to use a table and write your debug output into it by means of an autonomous transaction. But sometimes it can be easier to just hand the debug info to a different session. Say hi to Dbms_Pipe…
Continue reading “Debugging via Dbms_Pipe”Sometimes you need to resize a filesystem because it grows out of it’s available space. With virtual machines this is quite easy, just resize the disk. But…. how do you make Linux know the disk has been resized?
Continue reading “Resize physical volume without reboot”As I read an article about Oracle providing version 23c “for free to developers” (https://blogs.oracle.com/database/post/oracle-database-23c-free) I wondered if it was usable for a quick deploy of Apex. As ORDS has been updated as well it turns out that needed some tweaking…
Continue reading “Quickstart Apex with docker-compose v2”