qemu-mipsel-static: 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-mipsel-static - from package: qemu-user-static

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

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