simgrid_update_xml: 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/simgrid_update_xml - from package: libsimgrid-dev

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

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