compass: 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/compass - from package: ruby-compass

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

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