. -, /etc/passwd, UID. UID 100, UID . GID, . , , . . (, (spool) ).
, , - . , . useradd adduser, , .
:
useradd [] LOGIN
:
-d
-s
-p
-g ( )
-G ( , )
useradd -g primary_grp -G admin -s /bin/shell -p xxxx -d /home/user
userdel deluser. , , ( *) /etc/passwd, . , kiwi
kiwi:*Xv8Q981g71oKK:102:100:Laura Poole:/home/kiwi:/bin/bash
kiwi .
, , , , . /etc/passwd. passwd. ,
passwd larry
larry. root, , passwd .
, . , . -, -, , , . , .
|
|
, , , bin, mail, sys. , . , , users.
/etc/group. :
::GID:
:
root:*:0:
users:*:100:mdw,larry
guest:*:200:
other:*:250:kiwi
root root. users . GID 100, mdw larry. , /etc/passwd . , , /etc/group. groups , ( ) .
guest . other; kiwi.
/etc/group password () , . . , ( newgroup), *.
addgroup groupadd. /etc/group, . /etc/group.