`npm config list -l`

npm-config-list.stdout

; cli configs
long = true
scope = ""
user-agent = "npm/4.0.5 node/v6.9.2 linux x64"

; default values
access = null
also = null
always-auth = false
bin-links = true
browser = null
ca = null
cache = "/home/maxb/.npm"
cache-lock-retries = 10
cache-lock-stale = 60000
cache-lock-wait = 10000
cache-max = null
cache-min = 10
cafile = undefined
cert = null
color = true
depth = null
description = true
dev = false
dry-run = false
editor = "vi"
engine-strict = false
fetch-retries = 2
fetch-retry-factor = 10
fetch-retry-maxtimeout = 60000
fetch-retry-mintimeout = 10000
force = false
git = "git"
git-tag-version = true
global = false
global-style = false
globalconfig = "/home/maxb/.nvm/versions/node/v6.9.2/etc/npmrc"
globalignorefile = "/home/maxb/.nvm/versions/node/v6.9.2/etc/npmignore"
group = 1000
heading = "npm"
https-proxy = null
if-present = false
ignore-scripts = false
init-author-email = ""
init-author-name = ""
init-author-url = ""
init-license = "ISC"
init-module = "/home/maxb/.npm-init.js"
init-version = "1.0.0"
json = false
key = null
legacy-bundling = false
link = false
local-address = undefined
loglevel = "warn"
; long = false (overridden)
maxsockets = 50
message = "%s"
node-version = "6.9.2"
onload-script = null
only = null
optional = true
parseable = false
prefix = "/home/maxb/.nvm/versions/node/v6.9.2"
production = false
progress = true
proprietary-attribs = true
proxy = null
rebuild-bundle = true
registry = "https://registry.npmjs.org/"
rollback = true
save = false
save-bundle = false
save-dev = false
save-exact = false
save-optional = false
save-prefix = "^"
scope = ""
scripts-prepend-node-path = "warn-only"
searchexclude = null
searchopts = ""
searchstaleness = 900
shell = "/bin/bash"
shrinkwrap = true
sign-git-tag = false
strict-ssl = true
tag = "latest"
tag-version-prefix = "v"
tmp = "/tmp"
umask = 18
unicode = true
unsafe-perm = true
usage = false
user = 1000
; user-agent = "npm/{npm-version} node/{node-version} {platform} {arch}" (overridden)
userconfig = "/home/maxb/.npmrc"
version = false
versions = false
viewer = "man"