utf8trans: 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/utf8trans - from package: docbook2X

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

On Debian possible default full paths are:

/usr/bin/utf8trans - from package: docbook2X

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

Error in other languages:
utf8trans: bevel nie gevind nie
utf8trans: comandă negăsită
utf8trans: comando não encontrado
utf8trans: commande introuvable
utf8trans: command not found
utf8trans: käsku ei ole
utf8trans: không tìm thấy lệnh
utf8trans: komanda nerasta
utf8trans: Kommando nicht gefunden.
utf8trans: kommandot finns inte
utf8trans: komut yok
utf8trans: nie znaleziono polecenia
utf8trans: níor aimsíodh an t-ordú
utf8trans: no se encontró la orden
utf8trans: no s'ha trobat l'ordre
utf8trans: opdracht niet gevonden
utf8trans: parancs nem található
utf8trans: perintah tidak ditemukan
utf8trans: príkaz nenájdený
utf8trans: příkaz nenalezen
utf8trans: команда не найдена
utf8trans: командата не е открита
utf8trans: 命令找不到
utf8trans: コマンドが見つかりません