grplan: 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/grplan - from package: routeplanner-gnome

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

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