Commands by varenc (2)

  • This is similar to standard `pv`, but it retains the rate history instead of only showing the current rate. This is useful for spotting changes. To do this, -f is used to force pv to output, and stderr is redirected to stdout so that `tr` can swap the carriage returns for new lines. (doesn't work correctly is in zsh for some reason. Tail's output isn't redirected to /dev/null like it is in bash. anyone know why? ???????) Show Sample Output


    1
    tail -f access.log | pv -l -i10 -r -f 2>&1 >/dev/null | tr /\\r \ \\n
    varenc · 2020-04-19 02:07:40 100
  • Print a random number between 1 and 50 with a normal distribution around the center. The numbers around the middle are the most likely to occur and the farther you get from that the less and less common they are. You can test this and observe the number distribution with this command: for i in `seq 100000`; do echo $[(${RANDOM}%40+${RANDOM}%40)/2+1]; done | sort -n | uniq -c Show Sample Output


    0
    echo $[(${RANDOM}%100+${RANDOM}%100)/2+1]
    varenc · 2019-05-16 00:58:25 43

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Write comments to your history.
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Block all IP addresses and domains that have attempted brute force SSH login to computer
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Show a Package Version on Debian based distribution
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delete multiple files with spaces in filenames (with confirmation)
ls -Q will show the filenames in quotes. xargs -p rm will print all the filenames piped from ls -Q and ask for confirmation before deleting the files. without the -Q switch, if we have spaces in names, then the files won't be deleted.

Count opening and closing braces in a string.
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Print a random 8 digit number
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Easily find latex package documentation
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Find usb device in realtime
Using this command you can track a moment when usb device was attached.


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