Redirect STDERR to a variable [duplicate]

Question

I have this code that produces an error, and it works to supress the STDOUT but it doesnt store the STDERR in the variable ERROR.

ERROR = $(memtester 900 1 > /dev/null)

Answer 1

You can capture it like this:

error=$(memtester 900 1 2>&1 >/dev/null)

order of redirection operators is important here.

• 2>&1 - redirects stderr to stdout
• >/dev/null - redirects stdout to /dev/null