xsil2graphics: command not found

Have You tried accessing the binary with the full path?

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/xsil2graphics - from package: xmds

You may install the required package with command apt-get install {package}
Error in other languages:
xsil2graphics: bevel nie gevind nie
xsil2graphics: comandă negăsită
xsil2graphics: comando não encontrado
xsil2graphics: commande introuvable
xsil2graphics: command not found
xsil2graphics: käsku ei ole
xsil2graphics: không tìm thấy lệnh
xsil2graphics: komanda nerasta
xsil2graphics: Kommando nicht gefunden.
xsil2graphics: kommandot finns inte
xsil2graphics: komut yok
xsil2graphics: nie znaleziono polecenia
xsil2graphics: níor aimsíodh an t-ordú
xsil2graphics: no se encontró la orden
xsil2graphics: no s'ha trobat l'ordre
xsil2graphics: opdracht niet gevonden
xsil2graphics: parancs nem található
xsil2graphics: perintah tidak ditemukan
xsil2graphics: príkaz nenájdený
xsil2graphics: příkaz nenalezen
xsil2graphics: команда не найдена
xsil2graphics: командата не е открита
xsil2graphics: 命令找不到
xsil2graphics: コマンドが見つかりません