patpost: 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/patpost - from package: dist

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

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