lifeograph: 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/lifeograph - from package: lifeograph

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

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