dvitodvi: 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/dvitodvi - from package: texlive-dviutils

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

On Debian possible default full paths are:

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

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

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