lilyterm: 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/lilyterm - from package: lilyterm

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

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