Answer by GUDDU KUMAR for nvm ls-remote command results in "N/A"

I was facing similar issue in ubuntu and I found that the issue is not related NVM but it's not able to reach to node repository due to Proxy setting so I did the below steps and then it worked as expected

• open /etc/apt/apt.conf

  nano  /etc/apt/apt.conf

• Add the following to the above opened file

Acquire::http::proxy "http://<proxy-user>:<proxy-pass>@<proxy-url>:<proxy-port>"Acquire::https::proxy "http://<proxy-user>:<proxy-pass>@<proxy-url>:<proxy-port>" 

• run below command

  export http_proxy='http://<proxy-user>:<proxy-pass>@<proxy-url>:<proxy-port>'

  export https_proxy='http://<proxy-user>:<proxy-pass>@<proxy-url>:<proxy-port>'

then your proxy issue will resolve and gives list of node version