licensing: 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/licensing - from package: licenseutils

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

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