Entware installation says "opkg: not found"

[TrueBlueRoo]

After installing Entware it comes up with opkg: not found
There is a file opkg in /usr/data/opt/bin but there seems a link missing to call it from anywhere.

[Guilouz]

Did you see what is reported at the end of the Entware installation?

Disconnect and reconnect SSH session, and you can now install packages with: opkg install

[TrueBlueRoo]

It was fine with the installation. No errors whatsoever.
When I called e.g. opkg install nano it stated opkg is unknown.
I solved it through adding the folder to the PATH:

export PATH=$PATH:/usr/data/opt/bin

After that I could call it from everywhere.