dviasm: 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/dviasm - from package: texlive-extra-utils

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

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