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    Sunday, June 08, 2014

    How to configure passwordless sudo for a user in Linux

    In this article I will be very brief on the topic. For more details you can read the below article on sudo and assigning permissions
    How to give permission to user to run some commands in Linux

    There is a parameter NOPASSWD which has to be used for your user to run allowed commands without providing their password everytime.

    For example:
    I want to all all the user of admin group to run bind services
    # visudo
    %admin  ALL=(ALL)      
    NOPASSWD: /etc/init.d/named reload

    Verify the changes. Login as deepak and try to run the command
    # su - deepak
    [deepak@test2 ~]$ sudo /etc/init.d/named reload
    Reloading named:                                          
    [  OK  ]
    Now as we see it didn't prompted for password.

    Just to allow a single user make the below changes
    deepak  ALL=(ALL)       NOPASSWD: /etc/init.d/named reload
    Allow the user to run all commands without getting prompted for password
    deepak  ALL=(ALL)       NOPASSWD: ALL
    I hope I made myself clear

    Related Articles
    How to give normal user root privileges using sudo in Linux/Unix

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