what is 2 devnull in linux

&>/dev/null. This is just an abbreviation for >/dev/null 2>&am...

&>/dev/null. This is just an abbreviation for >/dev/null 2>&1. It redirects file descriptor 2 (STDERR) and descriptor 1 (STDOUT) to /dev/null.

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2>&1 will redirect stderr to wherever stdout currently points to. Th...

2>&1 will redirect stderr to wherever stdout currently points to. The argument >/dev/null will redirect stdout to /dev/null i.e discard/silent the.

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otherwise affect the output of the program (which is designed to be piped i...

otherwise affect the output of the program (which is designed to be piped into another program). You can, however, do this: exec 2>/dev/null.

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From installing Drupal Console: 5) Take advantage of command autocomplete f...

From installing Drupal Console: 5) Take advantage of command autocomplete feature. #Bash or Zsh: Add this line to your shell configuration.

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TL;DR: >/dev/null 2>&1 || true effectively silences the command, ...

TL;DR: >/dev/null 2>&1 || true effectively silences the command, throwing away any (error or normal) output and the result of the command, but.

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/dev/null - standard file that discards all you write to it, but reports th...

/dev/null - standard file that discards all you write to it, but reports that the write operation succeeded. 1 is stdout and 2 is stderr. 2>&1 redirects.

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I remember being confused for a very long time about the trailing garbage i...

I remember being confused for a very long time about the trailing garbage in commands I saw in Unix systems, especially while watching.

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Effectively, the two are equivalent. cmd > /dev/null 2>&1 connect...

Effectively, the two are equivalent. cmd > /dev/null 2>&1 connects stdout of the command to /dev/null, and then connects stderr to the same file.

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The N> syntax in Bash means to redirect a file descriptor to somewhere e...

The N> syntax in Bash means to redirect a file descriptor to somewhere else. 2 is the file descriptor of stderr, and this example redirects it to.

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You are right, 2 is STDERR, 1 is STDOUT. When you do 2>&1 you are sa...

You are right, 2 is STDERR, 1 is STDOUT. When you do 2>&1 you are saying: "print to STDOUT (1) the things that would go to STDERR (2)".

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Explains how to redirect output and errors to /dev/null under UNIX / Linux ...

Explains how to redirect output and errors to /dev/null under UNIX / Linux / BSD shell @hourly /scripts/backup/dwn.220.v.ua >/dev/null 2>&1.

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How can I redirect command error output /dev/null on a Linux or Unix-like s...

How can I redirect command error output /dev/null on a Linux or Unix-like system Syntax: Standard Error (stderr -2 no) to a file or /dev/null.

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I am new to unix and learning. Came across this statement cmd 2>/dev/nul...

I am new to unix and learning. Came across this statement cmd 2>/dev/null/ dev/null/ denotes that std error is stored in /dev/null but that is.

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/dev/null — специальный файл в системах класса UNIX, представляющий собой т...

/dev/null — специальный файл в системах класса UNIX, представляющий собой т. н. mknod FILE c 13 2. Здесь FILE сделать что-то > /dev/null 2>&1.

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[command] 2>/dev/null この場合。 標準エラー出力 だけを捨てるので。 標準出力 はそのまま使える。 例たとえば特定のファイ...

[command] 2>/dev/null この場合。 標準エラー出力 だけを捨てるので。 標準出力 はそのまま使える。 例たとえば特定のファイルを探したい場合。 普通に.

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