Hello, this is a great article and in an attempt to share more knowledge about command line tips, here's this one:
With Bash (this tip does not work with Csh for exemple), instead of using {1,2,3,4,5,6,7,8,9} you can simply type {1..9}.
Give it a try in a Bash shell with:
echo {1..9}
»
echo {1..9}»