hokey: 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/hokey - from package: hopenpgp-tools

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

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