[Linux] Input password automatically

In this post, I will introduce an approach to input password programatically, which is useful if a repeated command needs password.

Note: this approach is subject to the risk of exposing your passwords to others, so use it with caution.

Let’s use sudo as an example. Normally when you type

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sudo ls

It will prompt for a password if you set one.

However, if you type

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sshpass 'your-password' sudo ls

Then the passord is fed into the command directly. Here the command sshpass is from a package sshpass, which can be installed with

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sudo apt-get install sshpass

Hope that this tip helps.

Last modified on 2019-10-07