I got this strange error message when launching the vi text editor during the installation of Solaris 10, I don’t know what kind of terminal you are on – all I have is ‘unknown’.
The reason for this is becasue the terminal emulation has not been defined in your environment. To configure the terminal you can use the TERM and export command. Most Window computers uses the vt100 emulation.
# TERM=vt100
# export