Not able to install unzip command

[Subbaraman Ramaswamy]

I am not able to install unzip and zip commands and also several commands related to eks cluster, kubectl,kubelet and kubeadm. I am using Ubuntu 20.0.1. I don't know how to correct these bugs.

apt install awscli
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package awscli 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: Package 'awscli' has no installation candidate
root@ip-172-31-18-206:~# kubectl get nodes
E1020 10:44:30.890300 3170 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
E1020 10:44:30.890814 3170 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
E1020 10:44:30.892311 3170 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
E1020 10:44:30.893429 3170 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
E1020 10:44:30.895377 3170 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
The connection to the server localhost:8080 was refused - did you specify the right host or port?