delrconsole: 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/sbin/delrconsole - from package: remote-tty

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