surserver: 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/surserver - from package: subtle

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

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