小编典典

如何在没有提示的情况下执行ssh-keygen

linux

我想在Centos7上使用shell脚本自动生成一对ssh密钥,我已经尝试过

yes "y" | ssh-keygen -t rsa
echo "\n\n\n" | ssh-keygen...
echo | ssh-keygen..

所有这些命令都不起作用,仅输入一个“ enter”,然后在“ Enter
passphrase(空无密码)为空”时停止shell脚本,我只想知道如何在shell中连续模拟多个“ enter”。

非常感谢任何人的帮助!


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2020-06-07

共1个答案

小编典典

只需 使用一个空白通 使用-N标志:

ssh-keygen -t rsa -N ''

要覆盖密钥文件 (在此示例中id_rsa):

 ssh-keygen -q -t rsa -N '' -f ~/.ssh/id_rsa 2>/dev/null <<< y >/dev/null

ssh-keygen 手册 页:

  -N new_passphrase provides the new passphrase.
  -q                silence ssh-keygen.
  -f filename       specifies the filename of the key file.

逐步说明

$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/klashxx/.ssh/id_rsa):

1 )为避免输入密钥,请使用-f

$ ssh-keygen -t rsa -f ~/.ssh/id_rsa
Generating public/private rsa key pair.
/home/klashxx/.ssh/id_rsa already exists.
Overwrite (y/n)?

2 )现在我们需要对 覆盖问题 自动回答“ y ” (让我们为该作业使用
here字符串
): __
__

$ ssh-keygen -t rsa -f ~/.ssh/id_rsa <<< y
Generating public/private rsa key pair.
/home/klashxx/.ssh/id_rsa already exists.
Overwrite (y/n)? Enter passphrase (empty for no passphrase):

3 )最后,我们将使用该-N标志输入无效通行证:

$ ssh-keygen -t rsa -N '' -f ~/.ssh/id_rsa <<< y
Generating public/private rsa key pair.
/home/klashxx/.ssh/id_rsa already exists.
Overwrite (y/n)? Your identification has been saved in /home/klashxx/.ssh/id_rsa.
Your public key has been saved in /home/klashxx/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:Xo0t6caMB/8TSsigxfY28JIfqYjyqxRZrFrPncx5yiU klashxx@server
The key's randomart image is:
+---[RSA 2048]----+
|                 |
|  .              |
|   o .           |
|  +   *    =     |
| +.  + BSo= o    |
|...o.+o+XO...    |
|.. .o.E==+B. .   |
|o . ...=.o...    |
|.+o.  o     ..   |
+----[SHA256]-----+

4多余的球 ,清理输出,只需检查返回码:

$ ssh-keygen -q -t rsa -N '' -f ~/.ssh/id_rsa 2>/dev/null <<< y >/dev/null
$ echo $?
0

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@ lukasz-dynowski,@ redochka,@ mellow-yellow和该线程中的其他成员。

2020-06-07