script devnull 2 &1

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

The built-in numberings for them are 0, 1, and 2, in that order. you can see the command above is redirecting standard output into /dev/null.

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&1 indicates file descriptor(stdout), otherwise(if you use just 1) you ...

&1 indicates file descriptor(stdout), otherwise(if you use just 1) you will redirect stderr to file named 1. [any command] >>/dev/null 2>&1.

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Assign the PID of the most recent background command to variable pid1 (more...

Assign the PID of the most recent background command to variable pid1 (more in bash man dwn.220.v.ua param1 1>/dev/null 2>&1 & pid1=$!

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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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With Shell Script this is not different, and a quite common idiom, but not ...

With Shell Script this is not different, and a quite common idiom, but not so well understood, is the 2>&1, like in ls foo > /dev/null 2>&1.

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Hi, I am new into UNIX shell scripting and I am wondering what is the sh $H...

Hi, I am new into UNIX shell scripting and I am wondering what is the sh $HOME/stats/Rep/Act_sh omc omc > /dev/null 2>&1Meaning of 2>/dev/null/.

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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 command). Some more common use case. command > /dev/null 2>&1 &.

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For instance, if I have dwn.220.v.ua script, dwn.220.v.ua script, I could s...

For instance, if I have dwn.220.v.ua script, dwn.220.v.ua script, I could simply execute on my terminal ]# php /path/to/my/dwn.220.v.ua and make the code executed.

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You can send output to /dev/null, by using command >/dev/null syntax. Ho...

You can send output to /dev/null, by using command >/dev/null syntax. However @hourly /scripts/backup/dwn.220.v.ua >/dev/null 2>&1. OR.

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В этой статье постараюсь объяснить эти странные команды. К примеру, у нас е...

В этой статье постараюсь объяснить эти странные команды. К примеру, у нас есть такая строчка: cron job command > /dev/null 2>&1.

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>/dev/null redirects the command standard output to the null device, whi...

>/dev/null redirects the command standard output to the null device, which is 2 >&1 redirects the standard error stream to the standard output.

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Q I have been writing a small script that makes a backup of some files from...

Q I have been writing a small script that makes a backup of some files from one server to another */2 * * * /bin/bash /home/aport/dwn.220.v.ua >/dev/null 2>&1.

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You have piped the second commands STDOUT and STDERR to /dev/null, and only...

You have piped the second commands STDOUT and STDERR to /dev/null, and only piped the first command's STDOUT to the second.

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>/dev/null 2>&1 -or- &> /dev/null in terms of having a cro...

>/dev/null 2>&1 -or- &> /dev/null in terms of having a cron job not send an email to root for the cron'd command. Is one an "old" way vs. a "new".

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Given the following two commands: the first (ls) is a valid command while t...

Given the following two commands: the first (ls) is a valid command while the second (ls -0) is an Let's try that again with > /dev/null 2>&1.

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