sympow: 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/sympow - from package: sympow

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

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