keytab-lilo: 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 CentOS possible default full paths are:

/usr/bin/keytab-lilo - from package: syslinux-perl

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/keytab-lilo - from package: lilo

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

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