openrpt-graph: 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/openrpt-graph - from package: openrpt

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

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