Worked on the uutils/coreutils repository to enhance the correctness and robustness of the head utility, focusing on overflow safety for the -n and -c options. Addressed a bug where supplying large negative values could cause panics by implementing overflow-safe arithmetic using Rust’s checked_add and overflow-aware comparisons. Added regression tests to validate behavior for edge cases, ensuring the utility produces no output rather than crashing when faced with problematic inputs. Demonstrated skills in Rust, system programming, and testing while strengthening the stability of coreutils head in debug builds, ultimately improving reliability for large-scale data processing and release readiness.