vam: command not found

Have You tried accessing the binary with the full path?

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/vam - from package: vim-addon-manager

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