blogin: 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/lib/rancid/bin/blogin - from package: rancid

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

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