wavbreaker: 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/wavbreaker - from package: wavbreaker

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