Report this

What is the reason for this report?

Unix read value validation

Posted on February 3, 2018

I use this code to store a password variable in the current script:

read -sp "What's your DB user password?" dbuserp

Is there a way to change the command to ask for the password twice and check matching? All in one line?



This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Unfortunately, it’s not possible to do that using read directly. You will need to ask for input twice and then check if they match:

read -sp "What's your DB user password?" dbuserp
read -sp "Please confirm your DB user password:" dbuserp_conf
if [ "$dbuserp" != "$dbuserp_conf" ]; then
    # passwords do not match
fi

The developer cloud

Scale up as you grow — whether you're running one virtual machine or ten thousand.

Get started for free

Sign up and get $200 in credit for your first 60 days with DigitalOcean.*

*This promotional offer applies to new accounts only.