QuickBits-1: !$

some times u want to take argument from the previous command you gave

say for example

$ ls /user/ramz/dir1/dir2/dir3/

Now you want to cd to the directory you used in ls command. The quick way is

$ cd !$

- This is equivalent to cd /user/ramz/dir1/dir2/dir3
- !$ - Takes the last argument of previous command.