fdtput: 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 CentOS possible default full paths are:

/usr/bin/fdtput - from package: dtc

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/fdtput - from package: device-tree-compiler

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

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