To edit much of IDL source incl say coyote: must be on thuban2 on root and centos7

Because mirzam was down tonight I used idl on canopus instead. In trying to run some idl galactic magnetic field idl programs on canopus, I kept hitting an obscure error on coyote’s cggreek routine which makes greek letters for plots.  Googling it I found that an idl 8.6.1 (as on canny) error prevented old cggreek from working.  (It worked ok forever on mirzy, which has I think idl 8.7)

So I installed the new cggreek from github to thuban2’s /var/share/astro/idleshare/coyote.  but this didn’t work!  why?  because i had to install it onto /var/share/astro_centos7/idleshare/coyote   Note because of access issues, one can not install directly onto /usr/share/astro on mirzy or canny, but must instead go to thuban2/var/share/astro_centos7/ as above (and see below).

by the way i used su cp etc etc on thuban 2 to overcome permission issues on canny or mirzy themselves, but prev post shows that su – on thuban2 might be easier