qwavheaderdump: 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/qwavheaderdump - from package: quelcom

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

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