Yeah I have installed 10 and OS version is 6.4.
> > When I am trying to upgrade 9.6 to 10 . I'M getting this error , please
> > help me out
>
> What OS and version?
>
> Where did you install Postgres from?
>
> >
> > pg_upgrade check for "/opt/postgresql/10/bin/passwd" failed: no such
> > file or directory failure, exiting
>
> AFAIK, passwd is not a regular binary in the community edition. Have you
> installed an extension in the 9.6 instance that you have not installed
> in the 10 instance? Or something else along that line?
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com
>