importmqlgui: 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/importmqlgui - from package: openrpt

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

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