Do you know ZSH?

I previously used Bash for scripting but now prefer ZSH. I've developed my own set of primitives so for instance

> cp NF ND

Will copy the newest file in the directory to the newest sub-directory.
NF & ND are global aliases (global means can be used any where in command line)


alias -g ND='*(/om[1])' # newest directory
alias -g NF='*(.om[1])' # newest file

zsh has many wonderful features, a small number are listed here:-

http://www.successtheory.com/tips/zshtips.html