itango: command not found

Have You tried accessing the binary with the full path?

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/itango - from package: python-pytango

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