I think I first started using UNIX around 1986. Always thought that DOS was a poor mans rip off of UNIX. Needless say this emulator is a major treat. I actually used to play "Hunt the Wumpus" with a buddy of mine way back when.
As for "should obsolete tools be removed" no! Everything in UNIX is built upon something else. You could and still can build the most useful shell scripts to support whatever task. Treat UNIX commands like any computer programming langaue commands and you have tools.
Just a week ago I'm using dd to convert old IBM mainframe from "EBCDIC" to "ASCII" data. Followed that up by writing some C language code to process packed decimal data.
All in All *NIX is the most useful command line platform there is!
I have extensive knowledge of C. I have been using it since 1987. Our companies youngsters have to get up to speed quickly as our simulations are C/C++ and the datasets are massive and the code must be very fast. Of course they were taught Java in college and find pointers difficult. They quickly come to appreicate the speed difference.
56-60 Senior Software Engineer, still enjoying coding, hacking and figuring things out. Don't spend much energy on the good ole days, whatever they were. Still prefer C over everything else. Question: What is the best programming language? Answer: Whatever the client was sold on at the trade show. Wrote a really nice bash shell web scraper yesterday. Amazing to still get so much mileage out of sed,awk,grep, and others. All I did was setup a windows share and mounted the filesystem in ubuntu. I like the idea that there are so any platforms around and no one way to do anything. Tonight Labview and robot vision to do line following.