indigo-deco: 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/indigo-deco - from package: indigo-utils

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