file-hasher

# File Hasher Compute, verify, and compare file hashes. Supports all hashlib algorithms. Zero dependencies. ## Quick Start ```bash # Hash a file (SHA-256) python3 scripts/file_hasher.py hash myfile.txt # Verify a download python3 scripts/file_hasher.py verify image.iso -e abc123def456... # Compare two files python3 scripts/file_hasher.py compare file1.txt file2.txt ``` ## Commands ### hash Compute file hash with one or more algorithms: ```bash python3 scripts/file_hasher.py hash file.txt # SHA-256 python3 scripts/file_hasher.py hash file.txt -a md5 # MD5 python3 scripts/file_hasher.py hash file.txt -a md5,sha1,sha256 # Multiple python3 scripts/file_hasher.py hash *.py --bsd # BSD format python3 scripts/file_hasher.py hash data.bin --json # JSON output ``` ### verify Check a file against an expected hash: ```bash python3 scripts/file_hasher.py verify image.iso -e <expected_hash> python3 scripts/file_hasher.py verify file.tar.gz -e <hash> -a sha512 ``` Exit code 0 = match, 1 = mismatch. ### check Verify files from a checksum file (sha256sum/md5sum/BSD format): ```bash python3 scripts/file_hasher.py check SHA256SUMS python3 scripts/file_hasher.py check checksums.txt -a md5 ``` Auto-detects algorithm from hash length and BSD format headers. ### compare Compare two files by hash: ```bash python3 scripts/file_hasher.py compare original.bin copy.bin python3 scripts/file_hasher.py compare a.txt b.txt -a md5 ``` ### directory Hash all files in a directory: ```bash python3 scripts/file_hasher.py directory ./src # Top level python3 scripts/file_hasher.py directory ./project -r # Recursive python3 scripts/file_hasher.py directory ./dist -r --bsd -a md5 # BSD + MD5 ``` ### string Hash a text string directly: ```bash python3 scripts/file_hasher.py string "hello world" python3 scripts/file_hasher.py string "password" -a md5,sha256,sha512 ``` ### algorithms List all available hash algorithms: ```bash python3 scripts/file_hasher.py algorithms ```