pdfxmltex: 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/pdfxmltex - from package: xmltex

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

On Debian possible default full paths are:

/usr/bin/pdfxmltex - from package: xmltex

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

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