It can get a bit annoying when using Cygwin under Windows and you are more familiar with the comfort of linux. One point is the bash configuration file "~/.bashrc" which is not loaded automatically when starting a new shell.
For instance, consider the following set of abbreviations in my ~/.bashrc (may initially not exist, so create it) file under cygwin:
alias ll='ls -lh' alias la='ls -lah' alias ..='cd ..' alias ...='cd ../..' alias e='exit'
Useful but normally you always have to type "bash" at the beginning of a new bash shell session.
One simple line solves the problem: Add the following line to your /etc/profile