(actually, this report is relative to rawhide, 1.1.2-10.  The code in
plain Red Hat 6.1 is broken, of course.)

This code

echo ${PATH} | grep -q ${kdepath}
if ( $status == 0 ) then
  exit
endif

can be replaced by:

if ( :"${PATH}": =~ :"${kdepath}": ) exit

Saves a process.

This is also more correct, if the user should happen to
have a) whitespace in his PATH or b) a path component like /usr/bind
:-)

A similar technique can be employed in kde.sh:

        if ! echo $PATH | grep -q "$kdepath" ; then
                PATH="$kdepath:$PATH"
        fi

becomes
	case :$PATH: in
		*:$kdepath:*) : ;;
		*)            PATH="$kdepath:$PATH" ;;
        esac

A process is saved here, as well.