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Editor to share with you how to solve the problem of SCP commands need to enter a password in the shell script, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

Solving the problem of entering password for SCP command in shell script

Use the key file.

It is assumed that host A (192.168.100.3) is used to obtain the file of host B (192.168.100.4).

Execute the following command on host A to generate the pairing key:

Ssh-keygen-t rsa

When prompted, press enter by default, and the public key is stored in the .ssh directory under the user directory. For example, root is stored in:

/ root/.ssh/id_rsa.pub

Copy the id_rsa.pub file in the .ssh directory to the ~ / .ssh/ directory of host B and rename it authorized_keys

Execute the command in host An and establish trust with host B, for example (assuming that the IP of host B is: 192.168.100.4):

Scp / .ssh/id_rsa.pub 192.168.100.4:/root/.ssh/authorized_keys

Now you can use the scp and ssh commands to get the file of host B without a password.

If you enter ssh 192.168.100.4, you don't need a password.

Note: in fact, the id_rsa.pub content can be added to the authorized_keys of the other machine.

These are all the contents of this article entitled "how to solve the problem of entering a password for SCP commands in a shell script". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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