prancid: 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/prancid - from package: rancid

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