avg_adm: 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/lib/cmtk/bin/avg_adm - from package: cmtk

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

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