genspktbl: 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/genspktbl - from package: irsim

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

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