How do I find stderr in Linux?

Normally, STDOUT and STDERR are both output to your terminal. But it’s possible to redirect either and both. For example, the data sent to STDERR by a CGI script usually ends up in log file specified in the web server’s configuration. It’s possible for a program to get information about STDERR on a linux system.

What is stderr command in Linux?

Stderr, also known as standard error, is the default file descriptor where a process can write error messages. In Unix-like operating systems, such as Linux, macOS X, and BSD, stderr is defined by the POSIX standard. … In the terminal, standard error defaults to the user’s screen.