Except the last N line of its input

-n, --lines=[-]NUM

print the first NUM lines instead of the first 10;

with the leading '-', print all but the last NUM lines of each file

ie.

tail s3-bucket-contents-source.txt

2022-02-24 14:15:18      11602 UUID
2022-02-09 17:32:20     480231 UUID

Total Objects: 25975
   Total Size: 8785058704

head -n -3 filename.txt

2022-02-24 14:15:18      11602 UUID
2022-02-09 17:32:20     480231 UUID