vim-addons: 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/vim-addons - from package: vim-addon-manager

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