Error Message:
groupadd: invalid group id 'sail'
Explanation:
The error message groupadd: invalid group id 'sail' indicates that the group id specified, ‘sail’, is considered invalid.
Details:
In Linux systems, when creating a new group using the groupadd command, you need to provide a valid group id. The group id should be a non-negative integer value. The id is used to uniquely identify the group in the system.
The group id can be specified either by its integer value or by its name. However, if you choose to use the name, it must follow certain rules to be considered valid, such as not containing any spaces or special characters.
Example:
Let’s consider an example where we want to create a new group with the name ‘sail’:
groupadd sail
In this case, the groupadd command will check if ‘sail’ is a valid group id. Since it’s not a valid non-negative integer value, an error message will be displayed, indicating that the group id is invalid.
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