roger_cli: 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/roger_cli - from package: roger-router-cli

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

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