Computercraft: UBUNOS file: install

print('UbunOS is not installed, do you want INSTALL UbunOS ?\n{1} Yes\n{2} No')
local choice=read()
if choice=='1' then
shell.run('rm *')
shell.run('mkdir /ubunos/')
shell.run('cp /disk/files/ /ubunos/files/')
shell.run('cp /disk/startup/ /ubunos/prog/')
shell.run('cp /disk/install/ /ubunos/install/')
shell.run('cp /disk/startup/ /startup/')
shell.run('cp /disk/wifi /ubunos/wifi')
shell.run('clear')
elseif choice=='2' then
shell.run('clear')
end