science-config: 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/science-config - from package: science-config

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

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