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Developer Jaism answered on March 18, 2020 Popularity 10/10 Helpfulness 2/10

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

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Developer Jaism

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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

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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

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

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

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