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  • 20 Comments
Joined 1 year ago
Cake day: June 30th, 2023
  • OmnislashIsACloudApp@lemmy.worldtoLinux@lemmy.ml•Is anyone using awk?
    15·
    10 months ago

    I use awk all the time. a very common and probably simplest reason I use it is it’s ability to handle variable column locations for data.

    if you know you always want the last field you can do something like

    awk '{print $NF}'

    but usually using it as for performing more advanced operations all in one go without having to pipe something three times.

    sure you can do grep cut grep printf, but you can instead do the pattern matching, the field, the formatting, whatever you need to all in one place.

    it’s also got a bunch of more advanced usage of course since it’s its own language. one of my favorite advanced one liners is one that will recognize if it is going to print a duplicate line anywhere in your output and prevent it. in cases where you don’t want to sort your output but you also want to remove duplicates it is extremely helpful and quick rather than running post-processing on the output in another way.

    all that said main reason I use it is because I know it and it’s fast, there’s nothing you can do in awk that you can’t do in Python or whatever else you’re more comfortable with. The best tool for the job is the one that gets it done quickly and accurately. unless your environment is limited and it prevents the installation of tools you’re more familiar with then there’s no real reason to use this over Python.

  • OmnislashIsACloudApp@lemmy.worldtoAsklemmy@lemmy.ml•Whats your such opinion
    4·
    11 months ago

    do you mean negative reinforcement?

    it’s like a grid right

    • positive = add
    • negative = remove
    • reinforcement = good thing
    • punishment = bad thing

    so things that we want:

    • positive reinforcement = add good thing
    • negative punishment= remove bad thing

    things we don’t want

    • negative reinforcement= remove good thing
    • positive punishment= add bad thing
  • OmnislashIsACloudApp@lemmy.worldtoLinux@lemmy.ml•find, grep, sed, and awk
    21·
    1 year ago

    agree with one and two and younger me would have agreed with your third point but I think I don’t anymore.

    yes cut is the simpler and mostly functional tool you need for those tasks.

    but it is just so common to need a slight tweak or to want to substitute something or to want to do a specific regex match or weird multi character delimiter or something and you can do it all easily in awk instead of having to pipe three extra times to do everything with the simplest tool.