dvi2tty: 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 Debian possible default full paths are:

/usr/bin/dvi2tty - from package: texlive-binaries

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

Error in other languages:
dvi2tty: bevel nie gevind nie
dvi2tty: comandă negăsită
dvi2tty: comando não encontrado
dvi2tty: commande introuvable
dvi2tty: command not found
dvi2tty: käsku ei ole
dvi2tty: không tìm thấy lệnh
dvi2tty: komanda nerasta
dvi2tty: Kommando nicht gefunden.
dvi2tty: kommandot finns inte
dvi2tty: komut yok
dvi2tty: nie znaleziono polecenia
dvi2tty: níor aimsíodh an t-ordú
dvi2tty: no se encontró la orden
dvi2tty: no s'ha trobat l'ordre
dvi2tty: opdracht niet gevonden
dvi2tty: parancs nem található
dvi2tty: perintah tidak ditemukan
dvi2tty: príkaz nenájdený
dvi2tty: příkaz nenalezen
dvi2tty: команда не найдена
dvi2tty: командата не е открита
dvi2tty: 命令找不到
dvi2tty: コマンドが見つかりません