id3tool: 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/id3tool - from package: id3tool

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

Error in other languages:
id3tool: bevel nie gevind nie
id3tool: comandă negăsită
id3tool: comando não encontrado
id3tool: commande introuvable
id3tool: command not found
id3tool: käsku ei ole
id3tool: không tìm thấy lệnh
id3tool: komanda nerasta
id3tool: Kommando nicht gefunden.
id3tool: kommandot finns inte
id3tool: komut yok
id3tool: nie znaleziono polecenia
id3tool: níor aimsíodh an t-ordú
id3tool: no se encontró la orden
id3tool: no s'ha trobat l'ordre
id3tool: opdracht niet gevonden
id3tool: parancs nem található
id3tool: perintah tidak ditemukan
id3tool: príkaz nenájdený
id3tool: příkaz nenalezen
id3tool: команда не найдена
id3tool: командата не е открита
id3tool: 命令找不到
id3tool: コマンドが見つかりません