Extract lines between two line numbers in shell

Question

How is this possible in shell using sed or any other filter

Lets say that i have two specific line numbers in two variables $line1 and $line2 and i want to extract lines between these two lines like this

cat my_file_path | command $line1 $line2

Example if my file is:

1:bbb

2:cccc

3:dddd

4:eeeee

My output should be if i do:

cat my_file_path | command 1 3

Output

bbb
cccc

Answer 1

Using sed:

$ cat my_file_path | sed -n "${line1},${line2}p"

or, even better (cat is somehow redundant):

$ sed -n "${line1},${line2}p" my_file_path