S05mountdevsubfs.sh says;
#! /bin/sh
### BEGIN INIT INFO
# Provides: mountdevsubfs
# Required-Start: mountkernfs
# Required-Stop:
# Should-Start: udev
# Default-Start: S
# Default-Stop:
# Short-Description: Mount special file systems under /dev.
# Description: Mount the virtual filesystems the kernel provides
# that ordinarily live under the /dev filesystem.
### END INIT INFO
And the documentation for the tags;
# Required-Start defines which facilities must be available to start and run this service. The init script system should make sure that the required facilities are started before this one.
# Should-Start is an optional field. The function is similar to Required-Start, but it does not define a hard dependency. If a service in Should-Start is not installed or enabled to start, it is silently ignored.
S05mountdevsubfs.sh says;
#! /bin/sh
### BEGIN INIT INFO
# Provides: mountdevsubfs
# Required-Start: mountkernfs
# Required-Stop:
# Should-Start: udev
# Default-Start: S
# Default-Stop:
# Short-Description: Mount special file systems under /dev.
# Description: Mount the virtual filesystems the kernel provides
# that ordinarily live under the /dev filesystem.
### END INIT INFO
And the documentation for the tags;
# Required-Start defines which facilities must be available to start and run this service. The init script system should make sure that the required facilities are started before this one.
# Should-Start is an optional field. The function is similar to Required-Start, but it does not define a hard dependency. If a service in Should-Start is not installed or enabled to start, it is silently ignored.