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