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I'm trying to write a shell script so that when I reinstall my Ubuntu again. I could just run script and retain all the packages. And I'm planning to pass password in form of argument.

My question here is how can i enter into sudo domain without manually entering password. As I'm also planning to design a UI where it can't access the terminal there.

Ex:

./recover.sh password
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2 Answers 2

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Why not just run the script as superuser?

sudo sh recover.sh
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  • ya that works when you directly access from terminal. But in UI you can only give a command .. watever you do it shoud be in the command
    – Pavan
    Apr 30, 2016 at 17:07
  • Look at this askubuntu.com/questions/496204/…
    – Ryan Doherty
    Apr 30, 2016 at 17:11
  • I have clearly mentioned that i want to pass password in form of argument. There is no such thing there
    – Pavan
    Apr 30, 2016 at 17:22
  • That question is basically a duplicate of this and he explained why its a bad idea but he said "You can echo the password to sudo using the -s option."
    – Ryan Doherty
    Apr 30, 2016 at 17:29
  • No you have misunderstood my question. Here my logic is not only limited to recovery, but it is also covering UI. And consider you are creating a UI and if u link a button with your script. Then you can only pass a command like ./install.sh password . But you cant expect the any output from terminal.
    – Pavan
    Apr 30, 2016 at 17:34
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You can use...

echo password | sudo -S recover.sh

Password being your sudo password.

From sudo manpage..

-S, --stdin Write the prompt to the standard error and read the password from the standard input instead of using the terminal device.

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