command line jump :
when edit a command line ,especially the command line is long , it's not effective to use arrow keys to move.
There are some shortcuts:
1.CTRL+a , move to the head of the line.
2.CTRL+e , move to the end of the line.
3.CTRL+ -> move forward by words.
4.CTRL+ <- move back by words.
//others
CTRL + - or CTRL + + will scale your terminal, so if you want your words in terminal bigger , use CTRL++.