prayer-accountd: 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/sbin/prayer-accountd - from package: prayer-accountd

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

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