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2> /dev/null

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Blue Badger answered on March 18, 2020 Popularity 8/10 Helpfulness 4/10

answer 2> /dev/null

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2> /dev/null

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> file redirects stdout to file
1> file redirects stdout to file
2> file redirects stderr to file
&> file redirects stdout and stderr to file

2&1> file redirects stdout and stderr to file

/dev/null is the null device it takes any input you want and throws it away. It can be used to suppress any output.

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Source: askubuntu.com

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Contributed on Sep 23 2020

Blue Badger

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What does '>/dev/null 2>&1' mean

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> is for redirect

/dev/null is a black hole where any data sent, will be discarded

2 is the file descriptor for Standard Error

> is for redirect

& is the symbol for file descriptor (without it, the following 1 would be considered a filename)

1 is the file descriptor for Standard Out

Therefore >/dev/null 2>&1 is redirect the output of your program to /dev/null. Include both the Standard Error and Standard Out.

Much more information is available at The Linux Documentation Project's I/O Redirection page.

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Contributed on Mar 18 2020

Bored Coder

0 Answers Avg Quality 2/10

what is /dev/null

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What is /dev/null ?

/dev/null is like a black hole, "whatever you write to /dev/null will be discarded, forgotten into the void."

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Source: Grepper

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Contributed on Sep 15 2022

Noelito

0 Answers Avg Quality 2/10

2/dev/null

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grep -r "^The" /etc/ 2>/dev/null

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Source: Grepper

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Contributed on Aug 22 2022

fast_and_the_curious

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/dev/null 2>&1

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>> /dev/null redirects standard output (stdout) to /dev/null, which discards it.

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Contributed on Jan 22 2022

Shahbaz

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Custom carousel

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import React, { useState } from 'react';
import { cn } from '@/lib/utils'; // if using shadcn's utility function for className merging
import { LucideChevronLeft, LucideChevronRight } from 'lucide-react';
import { AnimatePresence, m } from 'motion/react';
import Image from 'next/image';

// const images = [
//   '/property/carousel-image.png',
//   '/images/listing/listing-01.webp',
//   '/images/listing/listing-02.webp',
// ];

type PropertyCarouselProps = {
  images: { url: string; alt: string }[];
};

export default function PropertyCarousel({ images }: PropertyCarouselProps) {
  const [currentIndex, setCurrentIndex] = useState(0);

  const handleNavigation = (index: number) => {
    setCurrentIndex(index);
  };

  const handlePrev = () => {
    setCurrentIndex(prev => (prev === 0 ? images.length - 1 : prev - 1));
  };

  const handleNext = () => {
    setCurrentIndex(prev => (prev === images.length - 1 ? 0 : prev + 1));
  };

  return (
    <m.div
      initial={{ opacity: 0.2 }}
      animate={{ opacity: 1 }}
      transition={{ duration: 1 }}
      className={`
        ${images ? 'block' : 'hidden'}
        relative w-full mx-auto bg-[#F8F9FA] rounded-lg
    `}
    >
      {/* Carousel Images */}
      <div className="overflow-hidden rounded-lg">
        <div
          className="relative flex w-full h-[500px] transition-transform duration-500"
          style={{ transform: `translateX(-${currentIndex * 100}%)` }}
        >
          {images.map((image, idx) => (
            <div key={idx} className="relative min-w-full h-full">
              <Image
                fill
                src={image.url}
                alt={`${image.alt}`}
                priority={true}
                className="object-cover object-center"
              />
            </div>
          ))}
        </div>
      </div>

      {/* Navigation Buttons */}
      <button
        onClick={handlePrev}
        className="centralize absolute left-4 top-1/2 w-11 h-11 transform -translate-y-1/2 bg-black/70 text-white p-2 rounded-full hover:bg-black/90"
      >
        <LucideChevronLeft />
      </button>
      <button
        onClick={handleNext}
        className="centralize absolute right-4 top-1/2 w-11 h-11 transform -translate-y-1/2 bg-black/70 text-white p-2 rounded-full hover:bg-black/90"
      >
        <LucideChevronRight />
      </button>

      {/* Navigation Dots */}
      <div className="absolute bottom-4 left-1/2 transform -translate-x-1/2 bg-black/70 p-2 rounded-full flex space-x-2">
        {images.map((_, idx) => (
          <button
            key={idx}
            onClick={() => handleNavigation(idx)}
            className={cn(
              'w-2 h-2 md:w-3 md:h-3 rounded-full',
              idx === currentIndex ? 'bg-white shadow-lg' : 'bg-gray-500 opacity-50'
            )}
          />
        ))}
      </div>
    </m.div>
  );
}

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Contributed on Nov 20 2024

Doyin Atobaru

0 Answers Avg Quality 2/10

What does '>/dev/null 2>&1' mean

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'>' is redirect, and then "/dev/null" is both a path, and for this specifically a device. So usually >/dev/null would overwrite null but since is dev/null --its like a linux blackhole 
and 2 is stderr so if any errors are thrown the error message is then '>' overwriting &--this-is-end-the-previous-command-because-ampersand. So & 1 is stdout so if any error from the dev/null overwrite else ';;'

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Contributed on Nov 21 2024

Embarrassed Echidna

0 Answers Avg Quality 2/10

What does '>/dev/null 2>&1' mean

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cat ~ 2>/dev/null | echo "this is error code"

Popularity 1/10 Helpfulness 1/10 Language css

Source: Grepper

Tags: css mean

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Contributed on Nov 21 2024

Embarrassed Echidna

0 Answers Avg Quality 2/10

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