solaris2mpm: 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/solaris2mpm - from package: rhnpush

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

Error in other languages:
solaris2mpm: bevel nie gevind nie
solaris2mpm: comandă negăsită
solaris2mpm: comando não encontrado
solaris2mpm: commande introuvable
solaris2mpm: command not found
solaris2mpm: käsku ei ole
solaris2mpm: không tìm thấy lệnh
solaris2mpm: komanda nerasta
solaris2mpm: Kommando nicht gefunden.
solaris2mpm: kommandot finns inte
solaris2mpm: komut yok
solaris2mpm: nie znaleziono polecenia
solaris2mpm: níor aimsíodh an t-ordú
solaris2mpm: no se encontró la orden
solaris2mpm: no s'ha trobat l'ordre
solaris2mpm: opdracht niet gevonden
solaris2mpm: parancs nem található
solaris2mpm: perintah tidak ditemukan
solaris2mpm: príkaz nenájdený
solaris2mpm: příkaz nenalezen
solaris2mpm: команда не найдена
solaris2mpm: командата не е открита
solaris2mpm: 命令找不到
solaris2mpm: コマンドが見つかりません