beav: 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/beav - from package: beav

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

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