1.添加用户账号 useradd命令示例：
[root@localhost ~]# groupadd group1
[root@localhost ~]# mkdir -p /testgroup1
[root@localhost ~]# groupadd DMXY
[root@localhost ~]# useradd -d /testgroup1/DMXY/ -g group1 -G DMXY -s /bin/basha -e 2019-01-01 DMXY
[root@localhost ~]# passwd DMXY
[root@localhost ~]# tail -1 /etc/passwd
DMXY:x:1001:1001::/testgroup1/DMXY/:/bin/basha
[root@localhost ~]# tail -1 /etc/shadow
DMXY:$6$w.kj4AHS$/VMddBNPl2Rv/4Nb3.JWRrTz3OqdM5MrKGOEX4bwIgRDqFmKXDZx9vc5N5teqJKr26J9AcHEZJjOGa8OF79cK.:18106:0:99999:7::17897:
2.用户账号的初始配置文件
[root@localhost ~]# vi ~DMXY/.bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/.local/bin:$HOME/bin
export PATH
echo"demaxiyawansui"
~
~
~
"/testgroup1/DMXY//.bash_profile" 13L, 214C
[root@localhost ~]# vi ~DMXY/.bashrc
# .bashrc
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
# Uncomment the following line if you don't like systemctl's auto-paging feature:
# export SYSTEMD_PAGER=
# User specific aliases and functions
echo"suiyuanbizhu"
~
~
~
"/testgroup1/DMXY//.bashrc" 12L, 250C
3.设置/修改用户口令 passwd命令示例：
[root@localhost ~]# passwd -l DMXY
锁定用户 DMXY 的密码 。
passwd: 操作成功
[root@localhost ~]# passwd -S DMXY
DMXY LK 2019-07-29 0 99999 7 -1 (密码已被锁定。)
[root@localhost ~]# passwd -u DMXY
解锁用户 DMXY 的密码。
passwd: 操作成功
[root@localhost ~]# passwd -d DMXY
清除用户的密码 DMXY。
passwd: 操作成功
[root@localhost ~]# passwd DMXY
passwd：所有的身份验证令牌已经成功更新
[root@localhost ~]# passwd -x 120 DMXY
调整用户密码老化数据DMXY。
passwd: 操作成功
[root@localhost ~]# grep DMXY /etc/shadow
DMXY:$6$jKrU1fFX$ycWTUJi9VOW0ZwALgXGBF.K11DNw0pSH6mQ/NGBCLWReo.Hl6RGu2WNs7Z1A05so64l2EwUzpj/Ki856n8KpO.:18106:0:120:7::17897:
[root@localhost ~]# passwd -n 1 DMXY
调整用户密码老化数据DMXY。
passwd: 操作成功
[root@localhost ~]# grep DMXY /etc/shadow
DMXY:$6$jKrU1fFX$ycWTUJi9VOW0ZwALgXGBF.K11DNw0pSH6mQ/NGBCLWReo.Hl6RGu2WNs7Z1A05so64l2EwUzpj/Ki856n8KpO.:18106:1:120:7::17897:
[root@localhost ~]# passwd -w 5 DMXY
调整用户密码老化数据DMXY。
passwd: 操作成功
[root@localhost ~]# grep DMXY /etc/shadow
DMXY:$6$jKrU1fFX$ycWTUJi9VOW0ZwALgXGBF.K11DNw0pSH6mQ/NGBCLWReo.Hl6RGu2WNs7Z1A05so64l2EwUzpj/Ki856n8KpO.:18106:1:120:5::17897:
[root@localhost ~]# passwd -i 7 DMXY
调整用户密码老化数据DMXY。
passwd: 操作成功
[root@localhost ~]# grep DMXY /etc/shadow
DMXY:$6$jKrU1fFX$ycWTUJi9VOW0ZwALgXGBF.K11DNw0pSH6mQ/NGBCLWReo.Hl6RGu2WNs7Z1A05so64l2EwUzpj/Ki856n8KpO.:18106:1:120:5:7:17897:
4.修改用户属性 usermod命令示例：
[root@localhost ~]# usermod -l DMXY1 DMXY
[root@localhost ~]# tail -1 /etc/passwd
DMXY1:x:1001:1001::/testgroup1/DMXY/:/bin/basha
[root@localhost ~]# usermod -c DMXY DMXY1
[root@localhost ~]# tail -1 /etc/passwd
DMXY1:x:1001:1001:DMXY:/testgroup1/DMXY/:/bin/basha
删除用户账号userdel命令
[root@localhost ~]# userdel -r DMXY1
[root@localhost ~]# ls /testgroup1/
5.添加组账号groupadd命令示例：
[root@localhost ~]# tail -3 /etc/group
zxs:x:1000:
group1:x:1001:
DMXY:x:1002:
[root@localhost ~]# groupadd -g 888 maket
[root@localhost ~]# tail -4 /etc/group
zxs:x:1000:
group1:x:1001:
DMXY:x:1002:
maket:x:888:
6.设置组账号密码，添加、删除成员gpasswd命令示例：
[root@localhost ~]# useradd xs1
[root@localhost ~]# useradd xs2
[root@localhost ~]# useradd xs3
[root@localhost ~]# gpasswd -a xs1 maret
正在将用户“xs1”加入到“maket”组中
[root@localhost ~]# tail -4 /etc/group
test3:x:1005:
xs1:x:1006:
xs2:x:1007:
xs3:x:1008:
[root@localhost ~]# gpasswd -d xs1 maket
正在将用户“xs1”从“maket”组中删除
[root@localhost ~]# tail -4 /etc/group
test3:x:1005:
xs1:x:1006:
xs2:x:1007:
xs3:x:1008:
[root@localhost ~]# gpasswd -M xs1,xs2,xs3 maket
[root@localhost ~]# tail -4 /etc/group
test3:x:1005:
xs1:x:1006:
xs2:x:1007:
xs3:x:1008:
[root@localhost ~]# tail -3 /etc/group
xs1:x:1006:
xs2:x:1007:
xs3:x:1008:
7.删除组账号groupdel命令示例：
[root@localhost ~]# groupdel maket
[root@localhost ~]# tail -5 /etc/group
test2:x:1004:
test3:x:1005:
xs1:x:1006:
xs2:x:1007:
xs3:x:1008:
8.查询命令-------ID、groups、finger、w、whoami、who
id命令：
[root@localhost ~]# id xs1
uid=1004(xs1) gid=1006(xs1) 组=1006(xs1)
[root@localhost ~]# id
uid=0(root) gid=0(root) 组=0(root) 环境=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
groups命令：
[root@localhost ~]# groups xs1
xs1 : xs1
[root@localhost ~]# groups
root
finger命令：
[root@localhost ~]# finger xs1
Login: xs1 Name:
Directory: /home/xs1 Shell: /bin/bash
Never logged in.
No mail.
No Plan.
[root@localhost ~]# finger
Login Name Tty Idle Login Time Office Office Phone Host
root root *:0 Jul 23 19:38 (:0)
root root pts/0 Jul 29 09:15 (192.168.100.106)
w命令：
[root@localhost ~]# w
14:44:04 up 5:33, 2 users, load average: 0.16, 0.05, 0.06
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root :0 :0 二19 ?xdm? 2:08 0.21s /usr/libexec/gnome-session-binary --session gnom
root pts/0 192.168.100.106 09:15 4.00s 0.62s 0.06s w
whoami命令：
[root@localhost ~]# whoami
root
who命令：
[root@localhost ~]# who
root :0 2019-07-23 19:38 (:0)
root pts/0 2019-07-29 09:15 (192.168.100.106)