The very first Linux kernel was released in 1991, and was barely usable.
1995, I may be able to understand, though I don't think many companies were using it at that time.
There is NO WAY you were a Linux Admin (or even heard of Linux) in 1985.
I stand corrected. I was running Xenix. The Yggdrasil release in 1991 smashed my Xenix root disk. It was in fact unusable. I didn't have a backup for my Xenix x86 system and put Windows on that hardware to host MS Word. My best Xenix system at the time was a TRS80 Model 16 (68000) based machine. It was actually 1998 when we opted for Linux over SunOS.