$""""$Can you please fill these with a logical explanation, please do not solve with ai$,$ because I already have an ai answer but it is not true and not rational."""

To update the records of a sequential file it must be opened in and modes.

To update a record of a Indexed Sequential file its $]$must be before the $|$operation$.$

The user accounts file $"/$etc$/$passwd$"$ has the $"$w$"$ permission only for its owner the has been also defined as part of the group.

You can list all the groups and the user name of their members with the command, however, to list all the groups a given user is a member of$,$ you must use the C Standard function named