GOAL
* to move around vi text editor
* search and replace string
1. to move to the left press the below button
h
2. to move to the right press the below button
l
3. to move upward press the below button
k
4. to move downward press the below button
j
5. to move to the end of line press the below button
$
6. to move the the beginning of the line press the below button
0
7. to move to the next word press the below button
w
8. to move to the previous word press the below button
b
9. to move to next page press the below button
ctrl+f
10. to move to the previous page press the below button
ctrl+b