cgmanager: 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 Debian possible default full paths are:

/sbin/cgmanager - from package: cgmanager

You may install the required package with command apt-get install {package}

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