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I'n trying to follow a tutorial here.

As an example we can say that we need a friend of ours to help us with something on our work system(Windows). To be able to receive a connection from us first our friend would need to set up a listener. nc -lvnp 4444

On my system, nc -nlvp 4444 fails with nc: missing port with option -l. I'm not sure why this is, as I've seen multiple tutorials with the same commands and it works fine. Is this a MacOS issue, or is it between keyboard and chair?

aidenmitchell
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  • This question appears to be off topic. We don't accept general computer questions. You may be able to get help on one of our sister sites, such as [apple.se] or [su]. – Michael Hampton Jul 05 '21 at 01:15
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    The `nc` command isn't particularly portable, and the version on macOS takes slightly different options than the GNU version that command's probably intended for. Check the `man` page. – Gordon Davisson Jul 05 '21 at 17:12
  • I had some similar issue in the past with NC and fixed it by `nc -nvp -l 4444` don't know why it seems to be a general issue – djdomi Jul 15 '21 at 04:10

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