shelxle: 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/shelxle - from package: shelxle

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

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