Sha256Sum

Name

Sha256Sum

Synopsis

FILE/M,TEXT/K,QUIET/S

Location

C:

Function

Prints the SHA-256 digest (FIPS 180-4) of each file, of standard input
when no file is given, or of the text given with TEXT. A line is the
digest in lowercase hex, two spaces and the name, as GNU sha256sum
prints it ("-" for standard input), so the output can be compared
with that of other systems.

Inputs

FILE  -- The files to read. "-" is standard input.
TEXT  -- A string to take as the data instead: its characters as they
         are, with no newline added (for example a password, see
         below). The name printed is "-".
QUIET -- Print only the digest, with no name.

Result

RETURN_OK, or RETURN_ERROR when a file could not be read (its line is
left out and the others are printed).

Example

Sha256Sum SYS:C/List
    b0e1...4f2a  SYS:C/List

Sha256Sum TEXT "mypassword" QUIET >ENVARC:SSH/password
    sets the password of sshd, which keeps the SHA-256 digest of the
    password in that file.

Notes

TEXT puts the string on the command line, where the shell may keep
it in its history.