try
alias snd-card-0 snd-emu10k1
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && \
/usr/sbin/alsactl restore >/dev/null 2>&1 || :
remove snd-emu10k1 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; }; \
/sbin/modprobe -r --ignore-remove snd-emu10k1
You can cut off the "\" and continue the command in the same line.
Lucio