[Fire HD 6 and 7 Q&A, Help & Troubleshooting] doobius:
PS C:\Users\Steve\ADB\platform-tools_r29.0.1-windows\platform-tools> .\adb shell

shell@ariel:/ $ cd system

shell@ariel:/system $ cd etc

shell@ariel:/system/etc $ ls

NOTICE.html.gz

audio_effects.conf

bcompat.manifest

bluetooth

chronos.conf

clatd.conf

compat_hint.conf

contentsupport.json

dalvik

dhcpcd

display_conf

event-log-tags

fallback_fonts.xml

fallback_fonts_cn.xml

fallback_fonts_ja.xml

fallback_fonts_latin.xml

fdrw_default.conf

firmware

fonts

fonts.xml

global_policy.xml

hosts

init.fosflags.sh

install-recovery.sh

ivona

kft_blacklist.conf

kisd_starter.sh

labdictionary

logo.bin

media_codecs.xml

media_codecs_google_audio.xml

media_codecs_google_telephony.xml

media_codecs_google_video.xml

media_profiles.xml

mkshrc

monitoring.conf

mtk_omx_core.cfg

permissions

ppp

preloaded-classes

privacy_filter.conf

receiver_filter_policy.xml

recovery-resource.dat

security

system_fonts.xml

system_fonts_cn.xml

system_fonts_ja.xml

terminfo

vold.fstab

wifi

2|shell@ariel:/system/etc $ cd ..

shell@ariel:/system $ cd bin

shell@ariel:/system/bin $ ls

6620_launcher

6620_wmt_concurrency

6620_wmt_lpbk

HDCPRepeaterMode

am

amzn_dha_hmac

amzn_dha_tool

amzn_drmprov_check

amzn_drmprov_tool

app_process

app_process32

app_process32_original

app_process_init

applypatch

appops

appwidget

atci_service

atcid

atrace

atrace-server

audiocmdservice_atci

auto_shutdown.sh

autobt

backup_whitelist

battery_lifetime_data

bcc

blkid

bmgr

boot_logo_updater

bootanimation

bu

bugreport

cat

chcon

chmod

chown

clatd

clear

cmp

content

cp

curl

dalvikvm

dalvikvm32

date

dd

debuggerd

devicetype_service

dex2oat

df

dhcpcd

display

dmesg

dnsmasq

dpm

drmkeydebug

drmserver

du

dump-ramdump.sh

dumpstate

dumpsys

e2fsck

ext4_resize

factoryadb.sh

force_provisioning.sh

fsck_msdos

getenforce

getevent

getprop

getsebool

grep

gzip

hd

hostapd

hostapd_cli

hotplug

id

idc

idmap

idme

ifconfig

iftop

ime

input

insmod

install-recovery.sh

install-recovery_original.sh

installd

ioctl

ionice

ip

ip6tables

iptables

kdestroy

keystore

kill

kinit

kisd

klist

kpoc_charger

kswitch

kvno

linker

lmkd

ln

load_policy

lock_emmc.sh

log

logcat

logd

logwrapper

ls

lsmod

lsof

make_ext4fs

md5

mdnsd

media

mediaserver

mkdir

mknod

mkswap

monkey

mount

mtpd

mv

nandread

ndc

netcfg

netd

netstat

newfs_msdos

nohup

notify

nvram_agent_binder

nvram_daemon

oatdump

patchoat

ping

ping6

pm

pppd

printenv

prlimit

ps

racoon

readlink

reboot

recovery_reporter

renice

requestsync

resize2fs

restorecon

rm

rmdir

rmmod

route

run-as

runcon

schedtop

screencap

screenrecord

sdcard

sendevent

sensorcal.sh

sensorservice

service

servicemanager

setenforce

setprop

setsebool

settings

sh

shutdownalertdialog.sh

sleep

smd

start

stop

stp_dump3

surfaceflinger

svc

swapoff

swapon

sync

tc

thermal_manager

toolbox

top

touch

uiautomator

umount

uncrypt

uptime

vdc

vmstat

vold

vpartition

watchprops

wipe

wlan_loader

wm

wmt_loader

wpa_cli

wpa_supplicant

shell@ariel:/system/bin $ exit

PS C:\Users\Steve\ADB\platform-tools_r29.0.1-windows\platform-tools>