“stdin: is not a tty” message from scp

Question

I got this message when I copy file using scp to CentOS server "stdin: is not a tty". What it means and how I make it go away? The transfer is ok.

Answer 1

This is likely because the /etc/bashrc script is trying to run stty, and indeed, stdin is not a tty.

You should make sure your login script exits early when it is being used in a non-interactive manner.

In csh syntax this is usually done by adding something like this to your login script (prior to commands like stty that are only useful for interactive sessions):

if ( ! $?USER || "$prompt" == "" || ! $?term ) then
    exit
endif