p-link: 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/p-link - from package: plink

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

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