rsakeyfind: 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/bin/rsakeyfind - from package: rsakeyfind

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

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