This file is indexed.

/etc/default/aufs is in aufs-tools 1:4.1+20161219-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# aufs variables for shell scripts
AUFS_VERSION=4.8-20161219
AUFS_SUPER_MAGIC=1635083891
AUFS_SUPER_MAGIC_HEX=0x61756673
AUFS_ROOT_INO=2
AUFS_WH_PFX=.wh.
AUFS_WH_PFX2=.wh..wh.
AUFS_MAX_NAMELEN=242
AUFS_WKQ_NAME=aufsd
AUFS_WH_DIROPQ=.wh..wh..opq
AUFS_WH_BASE=.wh..wh.aufs
AUFS_WH_PLINKDIR=.wh..wh.plnk
AUFS_WH_ORPHDIR=.wh..wh.orph

# library functions for aufs shell scripts

# path in canonical representation
# note: bash builtin "pwd -P" modies $PWD unexpectedly
SetDir() # var dir
{
	cd "$2"
	eval "$1=\"$(pwd -P)\""
	cd "$OLDPWD"
}

# escape the unprintable characters, mainly for grep-ping /proc/mounts
Esc() # [-e]
{
	sed -r -e '
	s/\\/\\134/g
	s/$/\\012/
	' |
	tr -d '\n' |
	sed -r -e '
	s/ /\\040/g
	s/\t/\\011/g
	s/\r/\\015/g
	s/\\012$//
	' |
	{ test $# -eq 1 &&
	test "$1" = "-e" &&
	sed -r -e 's/\\/\\\\/g' ||
	cat; }
	echo
}

# find a mount-entry by its mount-point
FindMntEnt() # mntpnt
{
	proc_mounts=/proc/self/mounts
	test ! -e $proc_mounts && proc_mounts=/proc/$$/mounts
	test ! -e $proc_mounts && proc_mounts=/proc/mounts
	fgrep \ $(echo "$1" | Esc)\ aufs\  $proc_mounts |
	tail -n 1
}

# current mount options
MntOpts() # mntpnt
{
	FindMntEnt "$1" |
	cut -f4 -d' '
}

########################################

AuDebug() # 1 | 0 [sec]
{
	test $1 -eq 0 && set +x
	aufs_debug=/sys/module/aufs/parameters/debug
	if [ -f $aufs_debug ]
	then
		echo $1 | sudo dd of=$aufs_debug 2> /dev/null
		test $# -eq 2 && sleep $2
	fi
	test $1 -eq 1 && set -x
	true
}

# Local variables: ;
# mode: text;
# End: ;