rsh-redone-rlogin: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/rsh-redone-rlogin - from package: rsh-redone-client

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