xrrancid: 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/xrrancid - from package: rancid

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

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