mudraw: 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/mudraw - from package: mupdf-tools

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

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