affverify: 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/affverify - from package: afflib-tools

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

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