unset SOURCEDIR
echo "Error: this script needs to be sourced in a supported shell" >&2
echo "Please check that the current shell is bash, zsh or ksh and run this script as '. $0 <args>'" >&2
unset SOURCEDIR
echo "Error: this script needs to be sourced in a supported shell" >&2
echo "Please check that the current shell is bash, zsh or ksh and run this script as '. $0 <args>'" >&2