Linux : How to redirect stderr to a file

How to redirect stderr to a file

Think of a problem where you want to write the logs scheduled command to a file and the Error Generated while running this command to file you need to specify the follwing options to do this job. Use the following options as per your Use cases.

There are two main output streams in Linux standard output (stdout) and standard error (stderr). Error messages are printed to standard error. The redirection operator (command > file) only redirects standard output, so standard error is still shown on the terminal. To redirect stderr as well, you have following options:

Redirect stdout to one file and stderr to another file:

command > outfile 2>errorfile

Redirect stderr to stdout (&1), and then redirect stdout to a file:

command >outfile 2>&1

To Appened Every Line:

command >> outfile 2>&1