How does linux display certain lines of a file (several lines in the middle) and several lines of linux?

How does linux display certain lines of a file (several lines in the middle) and several lines of linux?


[1] 3,000th rows are displayed starting from 1000 rows. Display 3000 ~ 3999 rows
Cat filename | tail-n + 3000 | head-n 1000

 

[2] display rows 1000 to 3000
Cat filename | head-n 3000 | tail-n plus 1000

 

* Pay attention to the order of the two methods

 

Decomposition:

Tail-n 1000: displays the last 1000 rows

Tail-n + 1000: The value ranges from 1000 rows to 1000 rows.

Head-n 1000: displays the first 1000 rows

 

[3] use the sed command
 

Sed-n'5, 10p' filename so that you can view only rows 5th to 10th of the file.