Executing sudo command in bash script without displaying it

Question

I'm executing a command with sudo from bash script, and I'm wondering how to prevent sudo from displaying anything on the screen

echo "mypassword" |  sudo -S cp -u /scripts/.bashrc ~/ > /dev/null 2>&1

The result will be an output displaying: [sudo] password for username:

I want to hide that output..

now, before the first comment; This isn't the safest way, since you're entering your password into the script, but this is strictly internal servers.

I tried your script on Ubuntu 18.04 and it does not display messages as you expect. — Antonio Petricca
– Antonio Petricca, Commented Aug 19, 2021 at 7:45

Geno Chen · Accepted Answer · 2021-08-19 08:43:14Z

2

Run sudo --help, we can get answer from the parameter list:

-p, --prompt=prompt           use the specified password prompt

Then,

echo "mypassword" | sudo -S --prompt="" cp -u /scripts/.bashrc ~/ > /dev/null 2>&1

may do the trick.

answered Aug 19, 2021 at 8:43

Geno Chen

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