bliss: 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/bliss - from package: bliss

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

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