fuseiso9660: 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/fuseiso9660 - from package: fuseiso9660

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

Error in other languages:
fuseiso9660: bevel nie gevind nie
fuseiso9660: comandă negăsită
fuseiso9660: comando não encontrado
fuseiso9660: commande introuvable
fuseiso9660: command not found
fuseiso9660: käsku ei ole
fuseiso9660: không tìm thấy lệnh
fuseiso9660: komanda nerasta
fuseiso9660: Kommando nicht gefunden.
fuseiso9660: kommandot finns inte
fuseiso9660: komut yok
fuseiso9660: nie znaleziono polecenia
fuseiso9660: níor aimsíodh an t-ordú
fuseiso9660: no se encontró la orden
fuseiso9660: no s'ha trobat l'ordre
fuseiso9660: opdracht niet gevonden
fuseiso9660: parancs nem található
fuseiso9660: perintah tidak ditemukan
fuseiso9660: príkaz nenájdený
fuseiso9660: příkaz nenalezen
fuseiso9660: команда не найдена
fuseiso9660: командата не е открита
fuseiso9660: 命令找不到
fuseiso9660: コマンドが見つかりません