science-distributedcomputing: 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-distributedcomputing - from package: science-distributedcomputing

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

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