gimagereader: 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/gimagereader - from package: gimagereader

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

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