I wanted to send you a zap for this useful information sir but alas I cannot because you don't have a wallet configured that supports them.
I do a lot of troubleshooting in my day to day responsibilities requiring searching through large sets of log files. Grep/egrep are staples but they are slow for large files. I discovered a new tool named "ripgrep". (https://github.com/BurntSushi/ripgrep/releases) This thing is 8 - 10 times faster that your typical grep search.
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That is really nice of you. I am still getting to that!