in.rlogind: 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 CentOS possible default full paths are:

/usr/sbin/in.rlogind - from package: rsh-server

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/in.rlogind - from package: rsh-redone-server
/usr/sbin/in.rlogind - from package: rsh-server

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

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