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user234517
Asked: 2014-01-26 16:52:50 +0800 CST

run all command inside script with typing the password one time

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i want to write script inside the script i will do many commands that require to be root like

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install eclipse

but i want to write the password just one time

i tried to write in top 

sudo su

to run as root but it stop the script so what i can so to write the password

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2 Answers

  1. The obvious solution: run the script as root

    sudo /your/script

    Then all commands in the script will be run as root.

    If some commands don't need root, just use sudo to change back to a normal user

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  2. If you have commands that don't require sudo, you might check out my answer on this question.

    For brevity, though, here is a quick answer:

    #!/bin/bash

PW=$1

echo $PW | apt-get update
echo $PW | apt-get upgrade
echo $PW | apt-get install eclipse

    Run with bash file_name.bash sudo_pw

    The reason for passing it this way is people can't necessarily tell what the parameter you're passing means, so even if someone monitors in some way (even looking over your shoulder), it's still secure.

    The primary reason I do this is because most of the commands I run with sudo create objects that need to be manipulated later on, and using sudo command will usually make them inaccessible, even if I sudo next_command. A simplistic example would be creating an Excel file and wanting to manipulate it with another process. Even running with sudo, most of the time, I can't access it again without overwriting it, which then recreates it as an inaccessible object.

    Note: This also works as a shell script as there is nothing BASH specific in the syntax, so you could use #!/bin/sh and ./file_name.sh sudo_pw instead, if that is your preference.

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