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What's the difference of redirect an output using >, &>, >& and 2&>?
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So, what we learned is, the “>” is the output redirection operator used for overwriting files that already exist in the directory. While, the “>>” is an output operator as well, but, it appends the data of an existing file. Often, both of these operators are used together to modify files in Linux.
Input/Output (I/O) redirection in Linux refers to the ability of the Linux operating system that allows us to change the standard input ( stdin ) and standard output ( stdout ) when executing a command on the terminal. By default, the standard input device is your keyboard and the standard output device is your screen.
On a command line, redirection is the process of using the input/output of a file or command to use it as an input for another file. It is similar but different from pipes, as it allows reading/writing from files instead of only commands.
A pipe passes standard output as the standard input to another command. A redirect sends a channel of output to a file.
> redirects stdout to a file2>& redirects file handle "2" (almost always stderr) to some other file handle (it's generally written as 2>&1, which redirects stderr to the same place as stdout).&> and >& redirect both stdout and stderr to a file. It's normally written as &>file (or >&file). It's functionally the same as >file 2>&1.2> redirects output to file handle 2 (usually stderr) to a file.
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