Standard error

• Standard error is the default error output device, which is used to write all system error messages.
• It is denoted by two number (2).
• Also known as stderr.
• The default standard input is the screen or monitor.
• 2> is input redirection symbol and syntax is:

 command 2> errors.txt

For example, send find command errors to a file called fileerrors.txt, sothat you can review errors later on, enter:

find / -iname "*.conf" 2>fileerrors.txt
cat fileerrors.txt