linux用户添加、删除、添加附属组、移出附属组

 1 #!/bin/bash
 2 
 3 function print_usage()
 4 {
 5     echo "./userM.sh -A <username>  添加用户" 
 6     echo "./userM.sh -MG <username> 添加到root组"
 7     echo "./userM.sh -DG <username> 从root组移除"
 8     echo "./userM.sh -l <username>  列出用户所在组"
 9     echo "./userM.sh -lall          列出所有用户名"
10 }
11 
12 
13 function u_add()
14 {
15     u_name=${1}
16     u_pass=${2}
17     useradd ${u_name}
18     echo ${u_pass} | passwd --stdin ${u_name}
19 }
20 
21 function u_add_to_groupRoot()
22 {
23     if [ "" == "$1" ] ; then
24         print_usage
25         return
26     fi
27 
28     u_name=${1}
29     #把用户加入root组
30     # usermod -G root ${u_name}
31     gpasswd -a ${u_name} root
32 }
33 
34 function u_del_from_groupRoot()
35 {
36     if [ "" == "$1" ] ; then
37         print_usage
38         return
39     fi
40     u_name=${1}
41     #把用户从root组删除
42     gpasswd -d ${u_name} root
43 }
44 
45 function u_groups()
46 {
47     if [ "" == "$1" ] ; then
48         print_usage
49         return
50     fi
51     u_name=${1}
52     groups ${u_name}
53 }
54 
55 function u_list_alluser()
56 {
57         # 删除bin行tcpdump之间的所有行
58     #compgen -u | sed '/^bin$/,/^tcpdump$/d'
59     compgen -u | sed '/^bin$/,/^shareadmin$/d'
60 }
61 
62 opttype=$1
63 username=$2
64 
65 
66 case ${opttype} in
67     -A) # 添加用户
68     u_add ${username} root@1234
69         ;;
70     -MG) # 修改组
71         u_add_to_groupRoot ${username}
72         ;;
73     -DG) # 修改组
74         u_del_from_groupRoot ${username}
75         ;;
76     -l)
77         u_groups ${username}
78         ;;
79     -lall)
80     u_list_alluser
81         ;;
82     *)
83         print_usage
84         ;;
85 esac