eval $(printf 'export %s="%s"' "$_varname" "$_path")
else
eval $(printf 'export %s="%s:$%s"' "$_varname" "$_path" "$_varname")
eval $(printf 'export %s="%s"' "$_varname" "$_path")
else
eval $(printf 'export %s="%s:$%s"' "$_varname" "$_path" "$_varname")