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
从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。
602392714
清零编程群