| first killer app: VisiCalc |
| Linux on PC , Microsoft tax |
| GNU project FSF (Richard Stallman), Copyleft, GNU license (GPL), Creative Commons |
| contemporary computers: what does that mean for science |
| open terminal (xterm, aterm, Apple 'terminal', iTerm2) |
| make sure we have /bin/(t)csh: echo $SHELL; other shells: sh, bash, ash, ksh, MSFT "powershell" |
| mouse interaction: cut, paste, double-click, right click, middle click, Apple-C,X,V |
| shell I: whoami, w, who, last, finger, uname, groups, root, passwd, users, which, $path, rehash, date, cal |
| shell II: ls, .hidden, which ls, man --> prompt command options arguments |