pkoptsvm: 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/pkoptsvm - from package: pktools

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

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