meanbias: 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 CentOS possible default full paths are:

/usr/bin/meanbias - from package: munipack

You may install the required package with command yum install {package}

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