How to generate sha1 hashes of a whole dvd?

Question

How can I generate one text-file containing all sha1 hashes of all files on a dvd with many folders and subfolders?

Oli · Accepted Answer · 2014-11-09 01:43:55Z

2

Use find

find /path/to/DVD -exec sha1sum {} + > text.file

Oli♦

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answered Nov 9, 2014 at 1:24

Panther

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could you please explain the parameters being passed to sha1sum? i mean how does '{}' \; work
– astrob0t
Nov 9, 2014 at 1:30
2

Thank you Oli. astrob0t - -exec passes the file to a command, sha1sum, and the {} represent the file, + or \; continues to next file. the find command has a number of options and can seem complex, See content.hccfl.edu/pollock/Unix/FindCmd.htm for a great intro
– Panther
Nov 9, 2014 at 1:51
1

@astrob0t That's just how find substitutes the files it finds into commands. I've actually switched out {} \; for {} +. Instead of running sha1sum file1; sha1sum file2 ... it runs sha1sum file1 file2 .... Only works when the command can take multiple files like that but makes things faster.
– Oli ♦
Nov 9, 2014 at 1:52

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