skeinforge_craft: 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/skeinforge_craft - from package: sfact

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

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