How to find a specific character in a line of a file and perform an action (sh) on that line?

Question

bash

I welcome everyone. Given is a file that contains lines like:

Mik_01-01-1990.rvk:0
Mik_02-01-1990.rvk:1
Mik_03-01-1990.rvk:1
Mik_04-01-1990.rvk:2

It is necessary to determine the lines ending with ":0" by enumeration, collect them into one list and write them to a file.

I tried but did not understand how to implement it correctly. Maybe there are other options?
while IFS= read -r line

Answer 1

cat yourfile.txt | grep -E ':0$' > otherfile.txt

Answer 2

You can bury zero with the end-of-line character.