cipux_mkcertkey: 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/sbin/cipux_mkcertkey - from package: cipux-rpc-tools

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