xmltoman: command not found

Have You tried accessing the binary with the full path?

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/xmltoman - from package: xmltoman

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

On Debian possible default full paths are:

/usr/bin/xmltoman - from package: xmltoman

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