utf8migrationtool: 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/utf8migrationtool - from package: utf8-migration-tool

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

Error in other languages:
utf8migrationtool: bevel nie gevind nie
utf8migrationtool: comandă negăsită
utf8migrationtool: comando não encontrado
utf8migrationtool: commande introuvable
utf8migrationtool: command not found
utf8migrationtool: käsku ei ole
utf8migrationtool: không tìm thấy lệnh
utf8migrationtool: komanda nerasta
utf8migrationtool: Kommando nicht gefunden.
utf8migrationtool: kommandot finns inte
utf8migrationtool: komut yok
utf8migrationtool: nie znaleziono polecenia
utf8migrationtool: níor aimsíodh an t-ordú
utf8migrationtool: no se encontró la orden
utf8migrationtool: no s'ha trobat l'ordre
utf8migrationtool: opdracht niet gevonden
utf8migrationtool: parancs nem található
utf8migrationtool: perintah tidak ditemukan
utf8migrationtool: príkaz nenájdený
utf8migrationtool: příkaz nenalezen
utf8migrationtool: команда не найдена
utf8migrationtool: командата не е открита
utf8migrationtool: 命令找不到
utf8migrationtool: コマンドが見つかりません