osspd: 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/sbin/osspd - from package: osspd

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