On page https://www.wapt.fr/en/doc-1.5/Installation/security/install_ssl_certificate... you write: "Example: echo srvwapt.mydomain.lan.crt ca.crt > cert.pem" Well, will that not only produce a file called cert.pem with this content: 'srvwapt.mydomain.lan.crt ca.crt'
Should you maybe use "cat" in your example instead of "echo", and also two >-signs?
Like this "Example: cat srvwapt.mydomain.lan.crt ca.crt >> cert.pem"