update-hoogle: 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/update-hoogle - from package: hoogle

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