install_headers.mpb: 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"

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