qemu-mipsn32: 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/qemu-mipsn32 - from package: qemu-user

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

Error in other languages:
qemu-mipsn32: bevel nie gevind nie
qemu-mipsn32: comandă negăsită
qemu-mipsn32: comando não encontrado
qemu-mipsn32: commande introuvable
qemu-mipsn32: command not found
qemu-mipsn32: käsku ei ole
qemu-mipsn32: không tìm thấy lệnh
qemu-mipsn32: komanda nerasta
qemu-mipsn32: Kommando nicht gefunden.
qemu-mipsn32: kommandot finns inte
qemu-mipsn32: komut yok
qemu-mipsn32: nie znaleziono polecenia
qemu-mipsn32: níor aimsíodh an t-ordú
qemu-mipsn32: no se encontró la orden
qemu-mipsn32: no s'ha trobat l'ordre
qemu-mipsn32: opdracht niet gevonden
qemu-mipsn32: parancs nem található
qemu-mipsn32: perintah tidak ditemukan
qemu-mipsn32: príkaz nenájdený
qemu-mipsn32: příkaz nenalezen
qemu-mipsn32: команда не найдена
qemu-mipsn32: командата не е открита
qemu-mipsn32: 命令找不到
qemu-mipsn32: コマンドが見つかりません