twine: 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/twine - from package: twine

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

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