25 Years of Free Software

When did I start writing Free Software, now called Open Source? That’s a tricky question. Does the time start with the first file edited, the first time it compiles or perhaps even some proto-program you use to work out a concept for the real program formed later on.

So using the date you start writing, especially in a era before decent version control systems, is problematic. That is why I use the date of the first release of the first package as the start date. For me, that was Monday 24th July 1995.

Sending data in a signal

The well-known kill system call has been around for decades and is used to send a signal to another process. The most common use is to terminate or kill another process by sending the KILL or TERM signal but it can be used for a form of IPC, usually around giving the other process a “kick” to do something.

One thing that isn’t as well known is besides sending a signal to a process, you can send some data to it. This can either be an integer or a pointer and uses similar semantics to the known kill and signal handler. I came across this when there was a merge request for procps. The main changes are using sigqueue instead of kill in the sender and using a signal action not a signal handler in the receiver.

WordPress 5.4

Debian packages for WordPress version 5.4 will be uploaded shortly. I’m just going through the install testing now. One problem I have noticed is, at least for my setup, there is an issue with network updates. The problem is that WordPress will ask me if I want to update the network sites, I say yes

wordpress 4.9.7

No sooner than I had patched WordPress 4.9.5 to fix the arbitrary unlink bug than I realised there is a WordPress 4.9.7 out there. This release (just out for Debian, if my Internet behaves) fixes the unlink bug found by RIPS Technologies.  However, the WordPress developers used a different method to fix it. There will

Back Online

I now have Internet back! Which means I can try to get the Debian WordPress packages bashed into shape. Unfortunately they still have the problem with the json horrible “no evil” license which causes so many problems all over the place. I’m hoping there is a simple way of just removing that component and going