/usr/lib/os-probes/mounted/40lsb is in os-prober 1.65+deb8u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | #!/bin/sh
# Test for LSB systems.
set -e
. /usr/share/os-prober/common.sh
partition="$1"
dir="$2"
type="$3"
lsb_field () {
	file="$1"
	field="$2"
	grep ^"$field" "$file" | cut -d = -f 2 | sed 's/^"//' | sed 's/"$//' | sed 's/:/ /g'
}
file="$dir/etc/lsb-release"
if [ ! -e "$file" ]; then
	exit 1
fi
release=$(lsb_field "$file" DISTRIB_RELEASE)
if [ -z "$release" ]; then
	release=$(lsb_field "$file" DISTRIB_CODENAME)
fi
description=$(lsb_field "$file" DISTRIB_DESCRIPTION)
if [ -z "$description" ]; then
	description=$(lsb_field "$file" DISTRIB_CODENAME)
fi
if [ -n "$description" ]; then
	if [ -n "$release" ]; then
		long="$description ($release)"
	else
		long="$description"
	fi
else
	exit 1
fi
short=$(lsb_field "$file" DISTRIB_ID | sed 's/ //g')
if [ -z "$short" ]; then
	short="UnknownLSB"
fi
label="$(count_next_label "$short")"
result "$partition:$long:$label:linux"
exit 0
 |