ipod-read-sysinfo-extended: 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/ipod-read-sysinfo-extended - from package: libgpod

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

On Debian possible default full paths are:

/usr/bin/ipod-read-sysinfo-extended - from package: libgpod-common

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

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