Install saods9-tclpackages by entering the following commands in the terminal:
sudo apt update sudo apt install saods9-tclpackages
Description:
Tcl/Tk packages provided with DS9
DS9 includes some extra Tcl/Tk packages that it needs for working. These packages are tclcheckdns and tcliis. . This package is not meant to be used independently of saods9, since the stability of the API and the presence of the individual packages is not quaranteed.
Homepage: http://ds9.si.edu/
Version: 7.5+repack1-2
Section: universe/science