summa

summa (from Latin summa fasciculi — file sum) computes cryptographic hash sums for files. It serves as the unified Vesper Linux replacement for GNU sha1sum, sha224sum, sha256sum, sha384sum, and sha512sum.

When invoked via one of its compatibility symlinks (e.g., sha256sum), the algorithm argument is inferred automatically.

Usage

summa ALGORITHM FILE...
sha1sum FILE...
sha224sum FILE...
sha256sum FILE...
sha384sum FILE...
sha512sum FILE...

Algorithms

Supported values for ALGORITHM:

• 1 — SHA-1
• 224 — SHA-224
• 256 — SHA-256
• 384 — SHA-384
• 512 — SHA-512

Flags

This utility does not take flags.

Examples

Compute SHA-256 sum for a file:

summa 256 archive.tar.gz

Compute SHA-512 sum using standard GNU compatibility symlink:

sha512sum rootfs.img

Calculate hashes for multiple files:

summa 1 file1.bin file2.bin