vina: 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/vina - from package: autodock-vina

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