fmtutil: 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/fmtutil - from package: texlive

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

On Debian possible default full paths are:

/usr/bin/fmtutil - from package: texlive-base

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

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