iroffer: 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/iroffer - from package: iroffer

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

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