/opt/unetlab/wrappers/unl_wrapper -a fixpermissions
You must own a valid license or have legal permission to download and use most commercial network OS images (Cisco IOS, IOSv, IOS XR, NX-OS, Juniper vJunos-switch, Arista vEOS, Palo Alto, Fortinet, etc.). Download-- Eve-ng Images
The Ultimate Guide to Downloading and Installing EVE-NG Images which uses simplified models of devices
Before you start downloading files, it is vital to understand how EVE-NG works. Unlike Packet Tracer, which uses simplified models of devices, EVE-NG uses virtualization technologies like QEMU (Quick Emulator) and Dynamips to run actual operating system images. Download-- Eve-ng Images
For quick reference, here is your command checklist for a new EVE-NG server: