2/14/2023 0 Comments How to sha checksum macBy using it, we're saying we're going to provide a string of information for the shasum command to use as input. It's for feeding something into a prior command. The <<< is a Unix/Linux special character set, called a "redirection" operator. c tells shasum to "check" the provided input. The actual shasum command is shasum -a 256 -c ( Don't include the parens or brackets in real life - they're just here to make the parts easy to see!) shasum -a 256 -c <<< '(hashToCompare) (filepath)' Like the following breakdown, with delineating parens around the hash and filepath parts, and square brackets around the optional "mode character" part. Question mark ( ?), if the hash was created with -p (portable mode)Ĭaret ( ^), if the hash was created with -0 (bits mode) Nothing, if the hash was created with -t or no option (text mode, which is the default)Īsterisk ( *), if the hash was created with -b (binary mode) Report shasum bugs to clarify useful answer - which allows you to compare a given hash with its file in one command:įollowed by a mode character, based on how the initial hash was generated: ` ' for text, `?' for portable, `^' for BITS), and name for each FILE. Print a line with checksum, a character indicating type (`*' for binary, Input should be a former output of this program. The sums are computed as described in FIPS-180-4. When verifying SHA-512/224 or SHA-512/256 checksums, indicate theĪlgorithm explicitly using the -a option, e.g. v, -version output version information and exit w, -warn warn about improperly formatted checksum lines s, -status don't output anything, status code shows success The following two options are useful only when verifying checksums: c, -check read SHA sums from the FILEs and check them With no FILE, or when FILE is -, read standard input.
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