by Sai gowtham

What is 2>&1 mean in Linux shell

In this tutorial, we are going to learn about what is meaning of 2>&1 in Linux shell.

Consider we have a example command like this.

curl http://www.google.com > /dev/null 2>&1

What does 2>&1 in the above command?

2 is a standard error (stderr) file descriptor.

> is used for redirection.

& indicates follow a file descriptor, not a file name.

1 is a standard output (stdout) file descriptor.

At final this 2>&1 command is used to redirect standard error to the standard output, it means to redirect the standard error to the same location where standard output is redirected.

Css Tutorials & Demos

How rotate an image continuously in CSS

In this demo, we are going to learn about how to rotate an image continuously using the css animations.

How to create a Instagram login Page

In this demo, i will show you how to create a instagram login page using html and css.

How to create a pulse animation in CSS

In this demo, i will show you how to create a pulse animation using css.

Creating a snowfall animation using css and JavaScript

In this demo, i will show you how to create a snow fall animation using css and JavaScript.

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