mhwaveedit: 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/mhwaveedit - from package: mhwaveedit

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

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