What is the use of option -o in the useradd command?





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As the title indicates, what is the use of option -o for command useradd? What is a good use case of this option?






linux useradd







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    4















    As the title indicates, what is the use of option -o for command useradd? What is a good use case of this option?






    linux useradd







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      As the title indicates, what is the use of option -o for command useradd? What is a good use case of this option?






      linux useradd







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      As the title indicates, what is the use of option -o for command useradd? What is a good use case of this option?






      linux useradd




      linux useradd






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      edited 8 hours ago









      GAD3R

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      asked 9 hours ago









      osmakosmak

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          useradd’s -o option, along with its -u option, allows you to create a user with a non-unique user id. One use case for that is to create users with identical privileges (since they share the same user id) but different passwords, and if appropriate, home directories. This can be useful for service accounts (although typically you’d achieve the same result using sudo nowadays).






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            The -o option allows the creation of users with non-unique IDs, only when you also supply the numerical value of their UID with the -u option in the same line, e.g.:



            # useradd -o huey -u 501
            
# useradd -o dewey -u 501
            
# useradd -o louie -u 501


            This permits setting up multiple users with same rights and priveleges, but with different home directories and passwords.






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            • # useradd -o scrooge -u 0

              – rrauenza
              4 hours ago












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            2 Answers
            2






            active

            oldest

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            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            7














            useradd’s -o option, along with its -u option, allows you to create a user with a non-unique user id. One use case for that is to create users with identical privileges (since they share the same user id) but different passwords, and if appropriate, home directories. This can be useful for service accounts (although typically you’d achieve the same result using sudo nowadays).






            share|improve this answer




























              7














              useradd’s -o option, along with its -u option, allows you to create a user with a non-unique user id. One use case for that is to create users with identical privileges (since they share the same user id) but different passwords, and if appropriate, home directories. This can be useful for service accounts (although typically you’d achieve the same result using sudo nowadays).






              share|improve this answer


























                7












                7








                7







                useradd’s -o option, along with its -u option, allows you to create a user with a non-unique user id. One use case for that is to create users with identical privileges (since they share the same user id) but different passwords, and if appropriate, home directories. This can be useful for service accounts (although typically you’d achieve the same result using sudo nowadays).






                share|improve this answer













                useradd’s -o option, along with its -u option, allows you to create a user with a non-unique user id. One use case for that is to create users with identical privileges (since they share the same user id) but different passwords, and if appropriate, home directories. This can be useful for service accounts (although typically you’d achieve the same result using sudo nowadays).







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 9 hours ago









                Stephen KittStephen Kitt

                181k25413492




                181k25413492

























                    4














                    The -o option allows the creation of users with non-unique IDs, only when you also supply the numerical value of their UID with the -u option in the same line, e.g.:



                    # useradd -o huey -u 501
                    
# useradd -o dewey -u 501
                    
# useradd -o louie -u 501


                    This permits setting up multiple users with same rights and priveleges, but with different home directories and passwords.






                    share|improve this answer
























                    • # useradd -o scrooge -u 0

                      – rrauenza
                      4 hours ago
















                    4














                    The -o option allows the creation of users with non-unique IDs, only when you also supply the numerical value of their UID with the -u option in the same line, e.g.:



                    # useradd -o huey -u 501
                    
# useradd -o dewey -u 501
                    
# useradd -o louie -u 501


                    This permits setting up multiple users with same rights and priveleges, but with different home directories and passwords.






                    share|improve this answer
























                    • # useradd -o scrooge -u 0

                      – rrauenza
                      4 hours ago














                    4












                    4








                    4







                    The -o option allows the creation of users with non-unique IDs, only when you also supply the numerical value of their UID with the -u option in the same line, e.g.:



                    # useradd -o huey -u 501
                    
# useradd -o dewey -u 501
                    
# useradd -o louie -u 501


                    This permits setting up multiple users with same rights and priveleges, but with different home directories and passwords.






                    share|improve this answer













                    The -o option allows the creation of users with non-unique IDs, only when you also supply the numerical value of their UID with the -u option in the same line, e.g.:



                    # useradd -o huey -u 501
                    
# useradd -o dewey -u 501
                    
# useradd -o louie -u 501


                    This permits setting up multiple users with same rights and priveleges, but with different home directories and passwords.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 9 hours ago









                    K7AAYK7AAY

                    1,0861028




                    1,0861028













                    • # useradd -o scrooge -u 0

                      – rrauenza
                      4 hours ago



















                    • # useradd -o scrooge -u 0

                      – rrauenza
                      4 hours ago

















                    # useradd -o scrooge -u 0

                    – rrauenza
                    4 hours ago





                    # useradd -o scrooge -u 0

                    – rrauenza
                    4 hours ago


















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