adddir: 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/share/gfxboot/bin/adddir - from package: gfxboot-dev

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

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