cimuser: 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/sbin/cimuser - from package: tog-pegasus

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

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