mpico: 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/mpico - from package: mined

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

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