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//lib/udev/check-cdrom.sh
#!/bin/bash pos=0 n=0 sp="$1" what="$2" found=0 [ -e /proc/sys/dev/cdrom/info ] || exit 1 /bin/cat /proc/sys/dev/cdrom/info | { while read line; do if [ "$found" = "0" -a "${line/drive name:}" != "$line" ]; then set ${line/drive name:} while [ $# -gt 0 ]; do pos=$[$pos+1] if [ "$1" == "$sp" ]; then found=1 break fi shift done [ "$found" = "0" ] && exit 1 elif [ "${line/$what:}" != "$line" ]; then set ${line##*$what:} while [ $# -gt 0 ]; do n=$[$n+1] if [ "$n" == "$pos" ]; then if [ "$1" = "1" ]; then exit 0 fi break fi shift done fi done exit 1 }