score_conservation: 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/score_conservation - from package: conservation-code

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

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