![]() Even when apps have permissions (possibly via social engineering), the system should warn about mass changes to files e.g a task is run that does deletion or encryption and the system checks what the target size is, it can just warn that a lot of files will be impacted and what will happen to them and ask if the user wants to proceed. Applications should only have read and create permissions for files not created by them until the user explicitly allows them to overwrite or delete files. Really this goes back to the problem of executables having write permissions to all user-account files on a system by default when they shouldn't. Maybe this is something Apple can setup where developers can enter a checksum online against a product version and when the OS tries to run a binary, it checks the product and version to see if the checksum matches the one the developer put in Apple's database. The system should really handle this for you. Then you just type checksum and drag a file in to get the results and that saves remembering the command for each but you'd only ever be checking a single value and it's not likely something you'll ever do anyway. Openssl sha1 "$1" openssl dgst -sha256 "$1" openssl md5 "$1" Add a checksum to a disk image using Disk Utility on Mac A checksum is a calculation of all the data on a disk or disk image. You can make a shell alias to do all the checksums in one go e.g open your bash profile with: open ~/.bash_profile, paste in: You would then use the same method and check if you get the same result. Whatever company that put the file up will say which checksum method they are using and then they write what the result would be. Because they have to check the whole file, some checksums can take a while to run. The one that gave me was all lower case, but the one on the audacity website is all upper case. I downloaded audacity and put the dmg file into to see the checksum. The different algorithms are just selected based on probabilities of duplicate checksums and performance. pineappleicicle September 16, 2021, 2:48pm 1. If the data got corrupted to 011110, it would be 2+3+4+5 = 14 so one bit changes but you get a larger change in the checksum. Say that your binary data was 011100 and you wanted to check it was accurate, you could do something like add all the positions of the 1s so 2+3+4 = 9 and that would be the verification. If there are small changes to the file then the result should change a lot. What they do is convert the data stored in the file into a short code using an algorithm. AI could start a whole series of these scripts. Is there a terminal command that returns what checksum method is used for a file? It would be nice to have an Automator script that would look at the file and return a checksum for the less than tech savy users.
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