AXIOMsys: 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/lib/axiom-20140801/bin/AXIOMsys - from package: axiom
/usr/lib/open-axiom/bin/AXIOMsys - from package: open-axiom

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

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