ftdi_eeprom: 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/ftdi_eeprom - from package: ftdi-eeprom

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

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