Debian "Cannot write to ‘-’ (Broken pipe)." Problem HELP

[OmarSaber]

Hi,

I get error during installation with ssh.

1.Command for installation

Code:
wget -O- http://downloads-global.3cx.com/downloads/3cxpbx/public.key | sudo apt-key add -

 

[Alphabetic]

See this post

https://www.3cx.com/community/threads/debian-cannot-write-to-‘-’-broken-pipe-problem-help.66560/

Because you're running as root you do not need to use sudo.

the command would be

wget -O- http://downloads-global.3cx.com/downloads/3cxpbx/public.key | apt-key add -

 

[cobaltit]

I don't see @OmarSaber using sudo in the screenshot although it was indicated in the code line. The error seems to indicate the lack of gnupg, gnupg2 and gnupg1.

@OmarSaber If you can't troubleshoot this basic error message I recommend installing from the 3CX ISO so all the dependencies are in place and you have an install that just works