使用管理员权限在ruby中打开文件

在Windows机器上（Windows 7正在运行，x86-64）可以打开system32/drivers/etc中的'etc/hosts'文件，修改它并从ruby保存？使用管理员权限在ruby中打开文件

我得到错误的代码非常简单

 
file = File.open("C:/Windows/System32/drivers/etc/hosts") 
file << "new line"

来源

2011-07-15 Sergey

是因为Windows受保护的文件？也许你必须关闭hosts文件。 –

你必须在写入模式下打开你的文件。对不起，我一开始没有看到这个:) – Senthess

如果你想追加某些东西到文件中，用'a +'模式打开它，请阅读File.open文档。 –

Instead of trying to acquire privileges from code (which maybe won't be portable across different windows OS'es), do like this:

open a command prompt as an administrator
run your script from there

By doing like this, all the programs you're executing will have administrative privileges as well.

EDIT: This is your problem:

file = File.open("C:/Windows/System32/drivers/etc/hosts","w") 
file << "new line"

You have to open the file in write mode.

来源

2011-07-15 12:04:27 Senthess

yeap，我试过了，但它仍然显示“没有打开写入（IO错误）” – Sergey

My best work around is have ruby open an elevated command prompt when necessary. It will prompt the user for a password, but it is better than nothing.

username = `whoami`.chomp 
run = "runas /noprofile /user:#{username} \"cmd /C#{cmd}\"" 
system(run)

cmd可以是要与权限运行任何命令，“不写（IO错误）打开”。我所做的编辑主机文件是：

hosts_path = 'C:\windows\System32\drivers\etc\hosts' 
hosts_file = File.open(host_path,'r') {|f| f.read} 
... 
    --edit the hosts_file here-- 
... 
cmd = "echo \"#{hosts_file}\" > #{hosts_path}"

来源

2014-05-15 17:39:28 mvndaai

使用管理员权限在ruby中打开文件

回答

相关问题