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sha224sum:tldr:714ec
This command is using the sha224sum
utility to perform a checksum verification of a file in the SHA-224 format.
Here's a breakdown of the command:
-
sha224sum
: It is the command that calculates and checks the SHA-224 checksum of a file. -
--ignore-missing
: This option instructssha224sum
to ignore the missing files. If the specified file doesn't exist, it won't generate an error. -
--check
: It tellssha224sum
to check the checksums of the specified files. -
--quiet
: This option suppresses the normal output ofsha224sum
and only prints the final summary. It is used to obtain a concise result. -
${filename-sha224}
: It is a variable used to represent the name of the file for which the SHA-224 checksum will be checked. The${}
syntax indicates the usage of a variable.
So, overall, the command is checking the SHA-224 checksum of the file represented as ${filename-sha224}
while ignoring any missing files, and the output is presented quietly without any extra information.