Shell scripts in Linux automatically enter passwords

The most recent thing about egg aches is that you need to get root in the shell script, so you need to enter a password when the shell script is running.

Lazy I certainly want to let the shell in the execution process can automatically enter the password, so you can take time to look at the sister map.

I learned from the query that the standard input can be automatically entered as content through the redirect operator. However, this requires that you end the interactive input with the-I parameter

For example:

Sudo-i Nginx < pwd

Then create a separate file: pwd. The content is password: 1234.

Shell scripts in Linux automatically enter passwords