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  • How to configure passwordless sudo for a user in Linux

    To learn more about the various syntax used in sudoers file follow below link

    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


    Deepak Prasad

    is a techie and an author who is still trying to survive in this IT generation with very little knowledge he has on Linux/Unix, VMware, SAN Storage, Automation, networking etc

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    How to configure passwordless sudo for a user in Linux How to configure passwordless sudo for a user in Linux Reviewed by Deepak Prasad on Sunday, June 08, 2014 Rating: 5

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