Linux Shell Scripting Essentials

Redirecting the standard I/O and error streams

We have an option to redirect standard input, output, and errors, for example, to a file, another command, intended stream, and so on. Redirection is useful in different ways. For example, I have a bash script whose output and errors are displayed on a standard output—that is, terminal. We can avoid mixing an error and output by redirecting one of them or both to a file. Different operators are used for redirection. The following table shows some of operators used for redirection, along with its description:

Operator	Description
>	This redirects a standard output to a file
>>	This appends a standard output to a file
<	This redirects a standard input from a file
>&	This redirects a ...