I tried to install Adobe Acroread without success. I ran my ./INSTALL, accepted the licensing agreement, accepted the default directory, /usr/local/Acrobat4, then got the messages "installing platform independent files . . . done"
"Installing platform dependent files . . . done"
./INSTALL: ed: command not found
Error installing /usr/local/Acrobat4/bin/Acroread
Never mind. I found out I had to install "ed."