SSH keygen specifies the path

ssh-keygen -t rsa -b 2048 -f ./id_rsa

Be careful :

Parameters (-f): It specifies the file name and path , Not a folder . So the effect of the above code is :

Generate a pair named... Under the current folder id_rsa The key of , There are two files
Custom path , You must first mkdir .ssh Folder
And then use pwd Get the full spelling of the path you want to generate （/home/kh/GitLab）, Then specify the file name after the path （/.ssh/id-rsa）

[email protected]:~/GitLab/.ssh$ ssh-keygen -t rsa -C ‘m’ -f /home/kh/GitLab/.ssh/id-rsa
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/kh/GitLab/.ssh/id-rsa.
Your public key has been saved in /home/kh/GitLab/.ssh/id-rsa.pub.
The key fingerprint is:
SHA256:83SzHvJvvwL0F9FlrO3P5xAam7ybYenB31i1sarMFfk m
The key’s randomart image is:
±–[RSA 2048]----+
| .=|
| oo|
| o.|
| . o…|
| S o =o.oo|
| + = Xoo*|
| o #.oEo|
| o*.Oo=+|
| +O==+*|