sympl: 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/cmtk/bin/sympl - from package: cmtk

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

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