sludge-compiler: 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/sludge-compiler - from package: sludge-compiler

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

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