HP-UX Reference (11i v1 00/12) - 1M System Administration Commands N-Z (vol 4)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD

/build/1111/BRICK/man1m/naaagt.1m

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useradd(1M) useradd(1M)

EXAMPLES

Add the user otto to the system with all of the default attributes.

useradd otto

Add the user otto to the system with a UID of 222 and a primary group of staff.

useradd -u 222 -g staff otto

List the defaults for the primary group, base directory, inactivity timeout, and skeleton directory.

useradd -D

Change the default primary group to staff.

useradd -D -g staff

WARNINGS

A directory can be shared between the users belonging to the same group. If the home directory is in the

unshared mode and a new user is allocated to that directory then it will be put into the shared mode by set-

ting the permissions of that directory to 775 (i.e. includes the write permissions to the group as well).

Also, the directory which will be shared should have

read and execute permissions for the group. Oth-

erwise,

useradd will report an error.

As many users may try to write the /etc/passwd ﬁle simultaneously, a passwd locking mechanism was

deviced. If this locking fails after subsequent retrying, useradd terminates.

A group entry in the /etc/group ﬁle can have maximum of LINE_MAX bytes. If a user is added to a

group that has reached LINE_MAX limit, another entry of the same group is created to which the new user

is added. A warning message is also issued.

FILES

/etc/passwd

/etc/skel

/etc/group

/etc/ptmp