How to add a system group-general Linux technology-Linux technology and application information. The following is a detailed description. Dear colleagues, I want to add a system group by using commands. Under ubuntu8.04, I found that the-r option does not exist through groupadd-h. Useradd-r pipi is used to add a system user pipi. Naturally, groupadd-r pipi is used to add a system group. This is what the groupadd command explains, the problem is that the system-class option-r in ubuntu8.04 does not exist at all.
Can I add a system group by setting the GID value? UID lower than 1000 (under ubuntu 8.04) is the UID of the System user, and GID lower than 1000 (under ubuntu 8.04) is the gid of the system group. If possible, this is quite troublesome, that is, every time I use the groupadd-g 130 pipi command such as the default UID, I have to cat/etc/group to check all the existing gids, avoid repeating-g 130 in groupadd with the GID in/etc/group. If groupadd-r pipi is used, cat/etc/group operations are not required, the GID of the newly added system group will be automatically followed up.
Is it because groupadd under ubuntu8.04 does not have-r (system category option), or I have to reset it somewhere so that the-r option of groupadd can be used by me, I hope you will tell us.
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