importrptgui: command not found

Have You tried accessing the binary with the full path?

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/importrptgui - from package: openrpt

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