I’ve come across Red Hat allot lately and am wondering if I need to get studying. I’m an avid Ubuntu server user but don’t want to get stuck only knowing one distro. What is the way to go if i want to know as much as I can for use in real world situations.
Not Linux but there are still a of Unix System V systems out there too. AIX, Solaris and HP-UX. Harder to learn as very much not open source software (although there is the Illumos project with distros like OpenIndiana).
Wow, last time I managed HP-UX, SunOS/Solaris, AIX, and Irix, was last century…
Unfortunately AIX in particular is very much still in use in my industry. Its slowly being phased out but is very much still there.
In banking I suppose? Or airline? Having hard time seeing AS400 in Banking… at least some are using IBM Z nowdays…
Healthcare. People keep systems for decades.
I see. I seen some still using palmOS. Is there still any palmOS in production?