anytun: 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/sbin/anytun - from package: anytun

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