cpangraph: 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:

/usr/bin/cpangraph - from package: libcpandb-perl

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

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