The z-shell is probably one of the best korn-shell based alternatives to bash.

====== Aliases ======
Zsh knows three different types of aliases:
===== Aliases for Commands =====
This is the regular alias, acting just like the one of bash:
  alias less=/usr/share/vim/vim64/macros/less.sh
call without parameters to display defined aliases:
  alias
==== Global Aliases ====
Global aliases act just like the ones described before, but with one exception: they don't have to be given at the beginning of the line. So e.g.:
  alias -g G='|grep'
can be used like this:
  dmesg G eth
and will be expanded to the following:
  dmesg |grep eth
==== Suffix Aliases ====
This is quite crazy stuff: when entering just an existing filename as "command", zsh can expand it as an alias by checking for the suffix of the filename. A simple example says more than a thousand words, so here it is:
  alias -s pdf=xpdf
basically makes all files ending with "pdf" being opened using ''xpdf''. Reminds me of the "double-click everything" behaviour of a certain operating system, but is better at the same time. So e.g. specifying the following on the commandline:
  *.pdf
will expand to:
  xpdf *.pdf
this is because alias expansion is being applied **before** globbing.

====== Escape Sequences and Key Combinations ======
Create them using the builtin ''bindkey'':
  bindkey ^A "beginning-of-line"
to view all defined bindkeys, just call without arguments just like with ''alias'':
  bindkey
''zsh'' assists you in finding the right name for a given key combination through ''^V'':
  ^V<key combination>

====== History Expansion ======
Although the syntax is quite identical to the one bash uses, the expansion may not be specified at the beginning of the line.
^ Command ^ Description ^
| '''Display''' ||
| history | show the full history |
| '''Expansion''' ||
| !! | expands to the last entered command |
| !1 | expands to the first entered command |
| !-2 | expands to the command entered right before the last one |
| !!:1 | expands to the second word of the last command |
| '''Substitution''' ||
| !!:s^bla^blub | expands to the last command with "bla" being substituted by "blub" |
| ^bla^blub | same as above, but a lot shorter |

====== Colour Escape Sequences ======
I created a file defining variables for the relevant colours:
<file>
fg_green=$'%{\e[0;32m%}'
fg_blue=$'%{\e[0;34m%}'
fg_cyan=$'%{\e[0;36m%}'
fg_red=$'%{\e[0;31m%}'
fg_brown=$'%{\e[0;33m%}'
fg_purple=$'%{\e[0;35m%}'

fg_light_gray=$'%{\e[0;37m%}'
fg_dark_gray=$'%{\e[1;30m%}'
fg_light_blue=$'%{\e[1;34m%}'
fg_light_green=$'%{\e[1;32m%}'
fg_light_cyan=$'%{\e[1;36m%}'
fg_light_red=$'%{\e[1;31m%}'
fg_light_purple=$'%{\e[1;35m%}'
fg_no_colour=$'%{\e[0m%}'

fg_white=$'%{\e[1;37m%}'
fg_black=$'%{\e[0;30m%}'
</file>
and use the builtin ''source'' to include the file just before defining the prompt (or using colour escapes in general).

====== Killer Features ======
First things first. ;-)
===== Prompt =====
There is builtin support for right-aligned prompts in ''zsh''. So one can have a prompt consisting of a left and a right part:
  PROMPT="${fg_light_blue}%d %# ${fg_no_colour}"
  RPROMPT=" ${fg_light_green}%n@%M${fg_no_colour}"
Which will look like this: <br>
[[Bild:Zsh.jpg]]
===== String Handling =====
Addressing inside strings is just like with ''Python'':
  a="ich hab nix gemacht.";a[1]='I';a[-1]='. (Bart Simpson)'
===== Hashes =====
Take the following example:
  typeset -A ass_array; ass_array=(one 1 two 2 three 3 four 4)
Then <code>print $ass_array[one]</code> returns the first element's value, 1.
<code>print ${(k)ass_array}</code> returns the keys, <code>print ${(v)ass_array}</code>
the values.
===== zcompile =====
The builtin ''zcompile'' can be used to precompile ''zsh'' source files for faster loading.
^ Option ^ Description ^
| -R | create a "static" binary, being loaded for each process (recommended for small files) |
| -M | create a "shared" binary, being mapped into memory and shared among different processes | 
==== Precompiling All Zsh Functions ====
<code>
cd /usr/share/zsh/<version>/funtions
for i in **/*(.) ; do
	zcompile $i
done
cd /usr/share/zsh/site/functions
for i in *; do
	zcompile $i
done
</code>

====== Links ======
  * http://zsh.dotsrc.org/Doc/Release/zsh.html
  * http://aperiodic.net/phil/prompt/
  * http://www.bsdforums.org/forums/archive/index.php/t-18503.html
  * http://unfug.org/data/foils/2005/PimpMyX86.txt
  * http://www.michael-prokop.at/computer/tools_zsh_liebhaber.html
  * https://dustri.org/b/my-zsh-configuration.html