fastdep: 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/fastdep - from package: fastdep

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

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