qmv: 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/qmv - from package: renameutils

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

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