tntrancid: 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/tntrancid - from package: rancid

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

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