tlogin: 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
/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/tlogin - from package: rancid

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