Miriad installed fine on both but the help system kept 'bombing' out and giving errors stating that (I believe) MIRHELP wasn't installed.
The solution was quite simple, after a little hunting around.
The various Miriad shell scripts that are installed all appear to require BASH to be installed, which most Linux flavours have; however, the Miriad help system (MIRHELP) requires the C-shell (i.e. CSH). Many Linux systems already have this installed. Mine didn't, however.
Simple solution: Just install the 'csh' package and MIRHELP works just fine.
Just thought I'd mention this as I don't believe I've read it anywhere in the documentation
It might be worth just rewriting this shell script to standardise the whole installation to use BASH.
Cheers!