如何在没有提示的情况下执行ssh-keygen

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!

回答:

只需 使用-N标志:

ssh-keygen -t rsa -N ''

(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.


$ ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/home/klashxx/.ssh/id_rsa):

)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)?

)现在我们需要对 覆盖问题 自动回答“ ” (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):

)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]-----+

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


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

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