I'm brand new to using the MacOS terminal and I could really use some guidance. I'm trying to automate a command that generates a SHA512 hash, specifically for a seed value creation process. The command I want to run is: `echo -n "1710084026-4b0f5fc279ba41b3e6d6b73fb26b8b333a1c3b7963a4c5b03f412538596b440c-UYwqnEx6DT9L-Number: 50796" | sha512sum`. I need to run this command around 100,000 times, changing the "Number" each time to a different integer (e.g., 50796, then 40048, etc.). I'm looking for advice on how to automate this task efficiently. I've attempted to write a bash script for it, but I haven't successfully matched the seed I'm trying to find or might be doing something incorrectly. I'm hoping someone can share their expert insights or point me in the right direction. Thanks a lot!
3 Answers
It's crucial to check that you're using the SHA512 function correctly. Make sure that there's no newline character at the end of your echoed text because that can mess up the result. Also, if you're using macOS, keep in mind that the `sha512sum` command may produce outputs with filenames included, so double-check your usage there. Once you've nailed that down, consider optimizing your script to run as efficiently as possible with built-in bash functions instead of external commands wherever possible.
Your script seems to be on the right track for a brute-force approach; however, consider refining it with a known value first. Work through a smaller range with predictable results to ensure everything processes correctly. And have you tried using leading zeros? This can be a quick fix if your numbers aren't matching as expected. You might just need to change how you format your input numbers to get accurate hashing.
First off, it looks like the length of your target seed is off. A proper SHA512 hash should always be 128 characters long. If your target is only 120 characters, that's a potential problem right from the get-go because you might never find a match with a shorter hash. Make sure that your target seed is valid! Also, it's a good idea to simplify your testing by first verifying the script with known inputs and outputs before setting it loose on a large number range.
Exactly! If your hash outputs additional formatting or filenames, you might miss matches. Streamlining your command will also help avoid unnecessary processing delays. And hey, don't forget about parallel processing; it can speed things up significantly.