====== Minimal Debian Installation ======
===== Initialization =====
==== Upgrade packages ====
Modify apt-get sources file: 
<code bash>
vi /etc/apt/sources.list
</code> 
You can add your favorite sources there. 
<WRAP center round tip 80%>
For some installations, we need to remove the CD-ROM as a source for apt-get.
</WRAP> 
Update apt-get and upgrade installed packages: 
<code bash>
apt-get update && apt-get upgrade
</code> 
<WRAP center round tip 80%>
For some installations which are missing 
**dialog**
package we should install package
**dialog** 
first. 
<code bash>
apt-get update && apt-get install dialog
</code> 
</WRAP> 
==== Remove redundant packages==== 
<code bash> 
apt-get -y purge apache2-* bind9-* xinetd samba-* nscd-* portmap sasl2-bin
apt-get -y purge lynx memtester unixodbc python-* odbcinst-* tcpdump ttf-*
</code> 
Do a clean: 
<code bash> 
apt-get autoremove && apt-get autoclean
</code> 
==== Install some essential packages ==== 
<code bash>
apt-get install vim htop iftop psmisc sudo curl net-tools build-essential
</code> 
===== Configurations ===== 
==== Change Time Zone ==== 
<code bash>
dpkg-reconfigure tzdata
</code> 
==== Change default listening port for OpenSSH ==== 
Edit configuration file for OpenSSH:
<code bash>
vi /etc/ssh/sshd_config
</code>
Restart OpenSSH:
<code bash>
service ssh restart
</code> 
==== Syntax highlight for VIM ==== 
Edit VIM configuration file:
<code bash>
vi /etc/vim/vimrc
</code>
Remove the "#" before "syntax on". 
==== Disable mouse mode in command line ==== 
<code bash>
vi ~/.vimrc
</code>
Add
<code bash>
if has("gui_running")
  set mouse=a 
else 
  set mouse= 
endif
</code> 
==== Make VIM as default editor ==== 
In some installations, the default editor is nano. We can replace that with VIM:
<code bash>
update-alternatives --config editor
</code>
Select "/usr/vim/vim.basic". 
==== Colorful ls ==== 
In order to get a colorful output from ls command, we can modify the configuration file in the home folder:
<code bash>
vi ~/.bashrc
</code>
Modify ~/.bashrc and remove starting "#"s before below lines:
<file>
export LS_OPTIONS='--color=auto'
eval "`dircolors`"
alias ls='ls $LS_OPTIONS'
alias ll='ls $LS_OPTIONS -l'
alias l='ls $LS_OPTIONS -lA'
</file> 
==== Custom Commands ====
<code bash>
vi ~/.bashrc
</code>
Modify ~/.bashrc and add below at the end of the file
<file>
alias lazydocker='docker run --rm -it -v /var/run/docker.sock:/var/run/docker.sock -v /opt/docker/lazydocker/config:/.config/jesseduffield/lazydocker lazyteam/lazydocker'
</file> 
===== Optimizing===== 
==== Replace OpenSSH with Dropbear ==== 
OpenSSH can be replaced by [[wiki:server:dropbear|Dropbear]] to save memory.