dwz: 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/dwz - from package: dwz

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

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