stefanschmidt

# MarkDeck: presentations as code
# https://arnehilmann.github.io/markdeck/

# install Docker Desktop (requires root privileges)
brew install --cask docker

# install Docker command line binaries
# /usr/local/bin/docker
# /usr/local/bin/docker-compose
open /Applications/Docker.app

stefanschmidt

! For use in Adguard for Safari on macOS: http://adguard.com
! Syntax for filters: https://kb.adguard.com/en/general/how-to-create-your-own-ad-filters
! See also: https://adblockplus.org/filter-cheatsheet#elementhideemulation
! Takes about ten seconds after saving for changes to be reflected in browser

! Removes the sections "People also search for", "People also ask", "Related searches" and "Featured snippet from the web"
www.google.com#?#div:-abp-has( > div > div > div > h4:-abp-contains(People also search for))
www.google.com#?#div:-abp-has( > div > div > div > div > h2:-abp-contains(People also ask))
www.google.com#?#div:-abp-has( > div> div > div > div > div > h3 > span:-abp-contains(Related searches))
www.google.com#?#div:-abp-has( > div > div > div > div > h2:-abp-contains(Featured snippet from the web))

stefanschmidt

# Using pdf2txt we will convert an extensive list of german last names from pdf to plain text
# Deutscher Familiennamenatlas (DFA) is available from https://www.namenforschung.net
#
# depends on pdftotext from poppler package (available via Homebrew)

# currently 54152 names (May 2021)
curl https://www.namenforschung.net/fileadmin/user_upload/dfa/Inhaltsverzeichnisse_etc/Index_Band_I-V_Gesamt_Stand_September_2016.pdf > temp.pdf
pdftotext temp.pdf

# remove page titles, page numbers, etc. from text with regular expressions

stefanschmidt

# Using htmlparser we will convert an extensive list of german last names from html to plain text
# Digitales Familiennamenwörterbuch Deutschlands (DFD) is available from https://www.namenforschung.net
#
# depends on htmlparser go package
# https://github.com/htmlparser/htmlparser

# single-page view: currently 46035 names (May 2021)
curl -s 'https://www.namenforschung.net/dfd/woerterbuch/gesamtliste-veroeffentlichter-namenartikel/' |  
htmlparser '#maincontent > ul:nth-child(even) > li > a text{}' > dfd.txt

stefanschmidt

# Using mkpasswd and slappasswd we will generate salted SHA-512 hashes
# password: secret

# method 1: using mkpasswd
# requires whois package on Ubuntu
mkpasswd --method=sha-512 --salt=foobar42
$6$foobar42$weYmU8biHjFLegPCuvGBSDaG0QMNucFv4Wq6.TGVK53/U0dp6bTrLYCLAdjecyX5mS1IA8vezYNjzTduU988B0

# method 2: using slappasswd
# requires slapd package on Ubuntu

stefanschmidt

# reload configuration
doveadm reload

# restart
service dovecot restart

# test authentication
doveadm auth test [email protected]

# test login with passdb and userdb lookup

stefanschmidt

# requires net-dns gem
# query defaults to A record

require 'net/dns'
res = Net::DNS::Resolver.new
packet = res.query("google.com")
packet.answer.first.value

stefanschmidt

# requires net-dns gem

require 'net/dns'
res = Net::DNS::Resolver.new
mx = res.mx("google.com")
mx.first.exchange

stefanschmidt

# Using an LDAP test server we will authenticate the user newton
# http://www.forumsys.com/tutorials/integration-how-to/ldap/online-ldap-test-server/
# requires net-ldap gem

require 'net/ldap'
ldap = Net::LDAP.new
ldap.host = 'ldap.forumsys.com'
ldap.auth "uid=newton,dc=example,dc=com", "password"
if ldap.bind
  puts 'authentication succeeded'

stefanschmidt

# Using an LDAP test server we will authenticate the user newton
# http://www.forumsys.com/tutorials/integration-how-to/ldap/online-ldap-test-server/

# method 1: using ldapwhoami
# should return "Result: Success (0)" if authentication was successful
ldapwhoami -vvv -h ldap.forumsys.com -D "uid=newton,dc=example,dc=com" -x -w password

# method 2: using ldapsearch
# should return "result: 0 Success" if authentication was successful
ldapsearch -h ldap.forumsys.com -x -D uid=newton,dc=example,dc=com -w password -b "dc=example,dc=com" "(uid=newton)"