rlinetd: 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/sbin/rlinetd - from package: rlinetd

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

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