hol-light: 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/hol-light - from package: hol-light

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

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