dvipdf: 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/dvipdf - from package: ghostscript

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

On Debian possible default full paths are:

/usr/bin/dvipdf - from package: ghostscript

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

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