advi: 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/advi - from package: advi

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

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