print_mgr: 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/print_mgr - from package: ctn

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

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