I am trying to install the OpenSSH client on my Ubuntu system since I still receive the following error message:
Reading package lists ... Done
Building the dependency tree
Reading status information ... Done
Openssh-client package is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: 'openssh-client' package has no installation candidate
I checked several forums and thought it was a problem updating my system. So I tried to update and I get this message that some packages can not be installed. I do not know what to do. Here is the answer:
Err http://sunsite.rediris.es xenial Release.gpg
Can not resolve "sunsite.rediris.es"
Err http://sunsite.rediris.es xenial-updates Release.gpg
Can not resolve "sunsite.rediris.es"
Err http://sunsite.rediris.es xenial-backports Release.gpg
Can not resolve "sunsite.rediris.es"
Err http://sunsite.rediris.es xenial-security Release.gpg
Can not resolve "sunsite.rediris.es"
W: Can not retrieve http://sunsite.rediris.es/mirror/ubuntu-archive/dists/xenial/InRelease
W: The download of some index files failed, they were skipped, or the old ones were used instead.