Your favorite *nix command

Was discussing a project related task with colleagues at one's desk and this brought out a very interesting trait of IT Professionals!



He had a terminal window open and to our surprise, he kept typing in "ls -ltr" even while discussing and talking.

This brought up an interesting characteristic of IT professionals who like to work with *nixes. Most of them have a favorite command that they just love to type on the terminal.

So, what is YOUR favorite *nix command - take the poll let me know!