dvipdfmx: 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/dvipdfmx - from package: dvipdfmx

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

On Debian possible default full paths are:

/usr/bin/dvipdfmx - from package: texlive-binaries

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

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