logprn: 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/logprn - from package: logtools

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

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