ipnadminep: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/ipnadminep - from package: ion

You may install the required package with command apt-get install {package}

Error in other languages:
ipnadminep: bevel nie gevind nie
ipnadminep: comandă negăsită
ipnadminep: comando não encontrado
ipnadminep: commande introuvable
ipnadminep: command not found
ipnadminep: käsku ei ole
ipnadminep: không tìm thấy lệnh
ipnadminep: komanda nerasta
ipnadminep: Kommando nicht gefunden.
ipnadminep: kommandot finns inte
ipnadminep: komut yok
ipnadminep: nie znaleziono polecenia
ipnadminep: níor aimsíodh an t-ordú
ipnadminep: no se encontró la orden
ipnadminep: no s'ha trobat l'ordre
ipnadminep: opdracht niet gevonden
ipnadminep: parancs nem található
ipnadminep: perintah tidak ditemukan
ipnadminep: príkaz nenájdený
ipnadminep: příkaz nenalezen
ipnadminep: команда не найдена
ipnadminep: командата не е открита
ipnadminep: 命令找不到
ipnadminep: コマンドが見つかりません