====== System Config ======

Debian & Ubuntu style


===== APT / dpkg =====

get installed packages:

  dpkg --get-selections > dpkgselections
  
set & install packages from file:

  dpkg --set-selections < dpkgselections

  dselect update   # fixes packages not found in db errors
  apt-get -u dselect-upgrade

  # or:
  aptitude install


==== Apt Redirect MITM Bug 01.2019 ====

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=768073

**Workaround:**

Sources List:
  deb http://cdn-fastly.deb.debian.org/debian-security stable/updates main contrib non-free

'Secure' Update:
  apt -o Acquire::http::AllowRedirect=false update
  apt -o Acquire::http::AllowRedirect=false upgrade


  wget http://ftp.de.debian.org/debian/pool/main/l/lz4/liblz4-1_0.0~r131-2+b1_amd64.deb
  dpkg -i liblz4-1_0.0~r131-2+b1_amd64.deb
  rm -f liblz4-1_0.0~r131-2+b1_amd64.deb

  apt install apt apt-transport-https apt-utils libapt-pkg5.0 libapt-inst2.0 libapt-pkg5.0

  apt -o Acquire::http::AllowRedirect=false upgrade









===== Date, Time and Timezones =====

==== get date & time ====

  date
  
==== set date & time ====

  date --set 1998-11-02 
  date --set 21:08:0
  
  
==== set timezone ====

  dpkg-reconfigure tzdata



==== fix locales ====

  apt-get install locales
  dpkg-reconfigure locales
  locale

If you still get "unable to set locale, falling back to the default locale", try this:

  export LANGUAGE=en_US.UTF-8
  export LANG=en_US.UTF-8
  export LC_ALL=en_US.UTF-8
  locale-gen en_US.UTF-8