Fun trick (I don't know if it still works): on the login prompt of your Linux (or other Unix) machine, type your username in all caps. This sets some strange termios(3) modes, which convert all lowercase output to UPPERCASE and all UPPERCASE input to lowercase. These modes are, AFAIK, for compatibility with these uppercase-only terminals.
(I tried it on a regular Linux virtual terminal (as is my normal way—I don’t use a graphical login manager), with my password in correct/inverted/upper/lower case, none work. It’s conceivable a pam module could make it work or something like that. I’m not investigating.)
FORTRAN, COBOL and BASIC all used all caps in the 70s when I started to learn programming. People thought I was a nutcase for abandoning cursive in high school!
And don't get me started on punch card programming in college in 1980 :)
Alas, at Princeton University 1980 that was the only way to submit programs. I was doing tech support for professors as part of my work-study package and a couple hours a week on a green-bar paper teletype sorta like this was a huge benefit: https://www.howtogeek.com/wp-content/uploads/2021/05/teletyp...
- THE INTERNET STARTED IN THE 1960'S.
- THE FIRST VIDEO DISPLAY TERMINALS THAT CAME OUT IN THE 70'S DIDN'T SUPPORT LOWERCASE, E.G. THE DEC VT05.
- PHYSICAL TELETYPES AT THE TIME ALSO WEREN'T GUARANTEED TO SUPPORT LOWERCASE, LIKE THE DECWRITER LA05.