Hi Peter, You seem to have misplaced a double-quote. It should be:
EMERGE_DEFAULT_OPTS="${EMERGE_DEFAULT_OPTS} --usepkg-exclude 'dev-lang/yasm"' emerge -1 yasm Though I don't understand why you dont't just pass the option to emerge directly: emerge -1 --usepkg-exclude 'dev-lang/yasm" yasm `${EMERGE_DEFAULT_OPTS}` isn't defined in your shell anyway, so that part of your command evaluated to nothing.