Content-Type: text/shitpost

I have been waffling for several days about whether to post this. Argument in favor:

I really like this command! A lot!

Argument against:

I don't understand why, since it doesn't actually do anything.

It's called do-over and it's just a glorified loop. You say something like

    do-over command args....

and it replies

    Hit <enter> to start

When you hit enter, it runs command args, and then it prompts again:

    Job completed in 12.3s
    Hit <enter> to re start

If someone else were showing me this, I would ask:

Why is this better than hitting the up-arrow and then enter?

or possibly

Why is this better than while read x; do command...; done?

I have no answer to these questions. But I have done a lot of both of those other things, and I like this better, although I don't know why.

    #!/usr/bin/perl

    use Time::HiRes qw(time);

    print STDERR "Hit <enter> to start\n";
    while (1) {
          my $x = <STDIN>;
          last unless $x;
          print STDERR scalar(localtime()), "\n";
          my $start = time();
          print STDERR "running @ARGV\n";
          system(@ARGV);
          my $elapsed = time() - $start;
          printf STDERR "Job completed in %.1fs\n", $elapsed;
          print STDERR "Hit enter to restart\n"; 
    }     

I was looking at a map of West Virginia and I saw there is a town named New Vrindaban. “That's a surprising name for a town in West Virginia,” I said, so I looked it up. Aha, it was founded by ISKCON, now it all makes sense.

New Vrindaban has a web site.

It is that case that $$\sqrt5\frac{\text{mile}}{\text{hour}} = \frac{\text{m}}{\text{s}}$$ almost exactly, so of course also $$5\frac{\text{mile}}{\text{hour}} = \sqrt5\frac{\text{m}}{\text{s}}.$$

I would find this more delightful if it hadn't just caused me so much confusion. I couldn't figure out whether I was supposed to multiply or divide because the number was the same both ways around. Still it might make a useful mnemonic, if I could remember which way around it was.