openmsx-catapult: 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/openmsx-catapult - from package: openmsx-catapult

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

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