Understand comments in /etc/fstab.

rules/gentoo/nrpe-host-auto.sh

@@ -4,6 +4,7 @@ trap "rm -f $FILESYSTEMS" 0
 > $prefix/etc/nrpe-host-auto.cfg
 awk < /etc/fstab \
     '! ($1 ~ /\//) { next } 
+     $1 ~ /^#/ { next }
      $3 == "swap" || $3 == "nfs" { next } 
      $4 ~ /noauto/ { next } 
      { print $1, $2 }' \