shell script 2 1 dev null

is the symbol for file descriptor (without it, the following 1 would be con...

is the symbol for file descriptor (without it, the following 1 would be considered Therefore >/dev/null 2>&1 is redirect the output of your program to /dev/null. Much more information is available at The Linux Documentation.

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I believe what you are looking for is: ls good bad >/dev/null 2>&...

I believe what you are looking for is: ls good bad >/dev/null 2>&1. You have to redirect stdout first before duplicating it into stderr; if you.

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Alternatively You could also use ls file1 file12 2>/dev/null 1>&2...

Alternatively You could also use ls file1 file12 2>/dev/null 1>&2 with the same effect—which first redirects stderr to /dev/null and then redirects.

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The built-in numberings for them are 0, 1, and 2, in that order. can see th...

The built-in numberings for them are 0, 1, and 2, in that order. can see the command above is redirecting standard output into /dev/null, which is forget how it works, is man bash and search for the REDIRECTION section.

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2>&1 redirects standard error (2) to standard output (1), which then...

2>&1 redirects standard error (2) to standard output (1), which then discards it as Lets divide the >> /dev/null 2>&1 statement into parts.

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So 2>&1 redirects stderr to whatever stdout currently points at, whi...

So 2>&1 redirects stderr to whatever stdout currently points at, while 2>1 So if you say 2>&1 >/dev/null, it redirects stderr to point at what.

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How do I redirect output and errors to /dev/null under bash / sh shell comm...

How do I redirect output and errors to /dev/null under bash / sh shell command > file 2>&1 /path/to/my/cool/appname > dwn.220.v.ua 2>&1.

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Understanding Shell Script's idiom: 2>&1. ls foo > /dev/null...

Understanding Shell Script's idiom: 2>&1. ls foo > /dev/null 2>&1. these two locations, and it will always be 1 for stdout and 2 for stderr.

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In short, it redirects stderr (fd 2) to the black hole (discard output of t...

In short, it redirects stderr (fd 2) to the black hole (discard output of the /dev/null treated as black hole in Linux/Unix, so you can put any this.

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Does >/dev/null 2>&1 and 2>&1 >/dev/null mean the same?...

Does >/dev/null 2>&1 and 2>&1 >/dev/null mean the same? [root@wiki ~]# echo "1" &> /dev/null [root@wiki ~]# [root@wiki ~]# ech "1".

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Hi, I am new into UNIX shell scripting and I am wondering what is the meani...

Hi, I am new into UNIX shell scripting and I am wondering what is the meaning of the below sh $HOME/stats/Rep/Act_sh omc omc > /dev/null 2>&1 . The built-in numberings for them are 0, 1, and 2, in that order.

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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 Linux programs by default receive three file descriptors which are opened before the 2>&1 means "redirect STDERR (2) to STDOUT (1)".

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1 'represents' stdout and 2 stderr. A little note for seeing Samp...

1 'represents' stdout and 2 stderr. A little note for seeing Sample: stdout 2 file. This will cause the rm -f $(find / -name core) &> /dev/null. This (thinking on.

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2>/dev/null. Redirect both stdout and stderr to the null device. &&g...

2>/dev/null. Redirect both stdout and stderr to the null device. &>/dev/null. Redirect stderr to the same file of stdout. 1>/dev/null 2>&1.

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Bash 4 introduced a warning message when end-of-file is seen before the tag...

Bash 4 introduced a warning message when end-of-file is seen before the tag is reached. echo OUTPUT; echo ERRORS >&2; } 1>/dev/null 2>&1.

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