fai-deps: 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/fai-deps - from package: fai-client

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

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