arjen-postfix-users-212--- via Postfix-users:
> Hi list,
>
> sorry in advance for a possible dumb question.
postlog versions 3.7 and earier suppress output when stderr is
not connected to a terminal. From the change log:
20230308
Cleanup: the postfix(1) and postlog(1) commands now produce
stderr output even when stderr is not connected to a terminal.
This eliminates an inconsistency, and makes these programs
easier to use in some automated procedures.
> - output is printed to the console:
> postfix tls new-server-cert
Actually, it was written to stderr.
> - output is printed to the console:
> postfix tls new-server-cert 2>&1
stderr was redirected to stdout.
> - output is not printed:
> postfix tls new-server-cert 2>/dev/null
stderr was written to /dev/null.
> - empty file /tmp/certinfo:
> postfix tls new-server-cert 2>/tmp/certinfo
With Postfix >= 3.8 the file is not empty.
> - empty file /tmp/certinfo:
> postfix tls new-server-cert >/tmp/file 2>&1
With Postfix >= 3.8 the file is not empty.
Wietse
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