该脚本非原创，仅发出来做学习参考交流。
一个删除用户的脚本，思路清晰，构思慎密，考虑方方面面，是学习shell脚本方面的好例子。
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1
#!/bin/bash
2
3
function
get_answer {
4
unset
ANSWER
5 ASK_COUNT=0
6
while
[ -z
"$ANSWER"
]
7
do
8 ASK_COUNT=$[ $ASK_COUNT + 1 ]
9
case
$ASK_COUNT
in
10 2)
11
echo
12
echo
"Please answer the question."
13
echo
14 ;;
15 3)
16
echo
17
echo
"One last try ... please answer the question."
18
echo
19 ;;
20 4)
21
echo
22
echo
"Since you refuse to answer the question..."
23
echo
"exiting program."
24
echo
25
#
26
exit
27 ;;
28
esac
29
30
echo
31
32
if
[ -n
"$LINE2"
]
33
then
34
echo
$LINE1
35
echo
-e $LINE2
" \c"
36
else
37
echo
-e $LINE1
" \c"
38
fi
39
40
read
-t 60 ANSWER
41
done
42
unset
LINE1
43
unset
LINE2
44 }
45
46
function
process_answer {
47
case
$ANSWER
in
48 y|Y|
yes
|Yes|yEs|yeS|YEs|YES)
49 ;;
50 *)
51
echo
52
echo
$EXIT_LINE1
53
echo
#EXIT_LINE2
54
echo
55
exit
56 ;;
57
esac
58
unset
EXIT_LINE1
59
unset
EXIT_LINE2
60 }
61
62
63
echo
"Step #1 - Determine User Account name to Delete "
64
echo
65 LINE1=
"Please enter the username of the user"
66 LINE2=
"account you wish to delete from system:"
67 get_answer
68 USER_ACCOUNT=$ANSWER
69
70 LINE1=
"IS $USER_ACCOUNT the user account"
71 LINE2=
"you wish to delete from the system?[y|n]"
72 get_answer
73
74 EXIT_LINE1=
"Because the account,$USER_ACCOUNT,is not"
75 EXIT_LINE2=
"the one you wish to delete,we are leaving the script..."
76 process_answer
77
78 USER_ACCOUNT_RECORD=$(
cat
/etc/passwd
|
grep
-w $USER_ACCOUNT)
79
if
[ $? -
eq
1 ]
80
then
81
echo
82
echo
"Account,$USER_ACCOUNT,not found."
83
echo
"Leaving the script..."
84
echo
85
exit
86
fi
87
88
echo
89
echo
"I found this record:"
90
echo
$USER_ACCOUNT_RECORD
91
echo
92
93 LINE1=
"Is this the correct User Account? [y|n]"
94 get_answer
95
96 EXIT_LINE1=
"Because the account,$USER_ACCOUNT,is not"
97 EXIT_LINE2=
"the one you wish to delete,we are leaving the script..."
98 process_answer
99
100
echo
101
echo
"Step #2 - Find process on system belonging to user Account"
102
echo
103
echo
"$USER_ACCOUNT has the following processes running:"
104
echo
105
106
ps
-u $USER_ACCOUNT
107
108
case
$?
in
109 1)
110
echo
"There are no processes for this account currently running."
111
echo
112 ;;
113 0)
114
unset
ANSWER
115 LINE1=
"Would you like me to kill the process(es)?[y|n]"
116 get_answer
117
118
case
$ANSWER
in
119 y|Y|
yes
|Yes|yEs|yeS|YEs|YES)
120
echo
121
trap
"rm $USER_ACCOUNT_Running_Process.rpt"
SIGTERM SIGINT SIGQUIT
122
ps
-u $USER_ACCOUNT > $USER_ACCOUNT_Running_Process.rpt
123
exec
< $USER_ACCOUNT_Running_Process.rpt
124
read
USER_PROCESS_REC
125
read
USER_PROCESS_REC
126
while
[ $? -
eq
0 ]
127
do
128 USER_PID=$(
echo
$USER_PROCESS_REC |
cut
-d
" "
-f1)
129
kill
-9 $USER_PID
130
echo
"Killed process $USER_PID"
131
read
USER_PROCESS_REC
132
done
133
134
echo
135
rm
$USER_ACCOUNT_Running_Process.rpt
136 ;;
137 *)
138
echo
139
echo
"Will not kill the process(es)"
140
echo
141 ;;
142
esac
143 ;;
144
esac
145
146
147
echo
148
echo
"Step #3 - Find files on system belonging to user account"
149
echo
150
echo
"Creating a report of all files owned by $USER_ACCOUNT."
151
echo
152
echo
"It is recommended that you backup/archive these files."
153
echo
"and then do one of two things:"
154
echo
" 1) Delete the files"
155
echo
" 2) Change the files' ownership to a current user account."
156
echo
157
echo
"Please wait. This may take a while..."
158
159
160 REPORT_DATE=`
date
+%y%m%d`
161 REPORT_FILE=$USER_ACCOUNT
"_Files_"
$REPORT_DATE.rpt
162
163
find
/ -user $USER_ACCOUNT > $REPORT_FILE 2>
/dev/null
164
165
echo
166
echo
"Report is complete."
167
echo
"Name of report: $REPORT_FILE"
168
echo
"Location of report: `pwd`"
169
echo
170
171
echo
172
echo
"Step #4 - Remove user account"
173
echo
174
175 LINE1=
"Do you wish to remove $User_Account's account from system?[y|n]"
176 get_answer
177
178
179 EXIT_LINE1=
"Since you do not wish to remove the user account."
180 EXIT_LINE2=
"$USER_ACCOUNT at this time.exiting the script..."
181 process_answer
182
183 userdel $USER_ACCOUNT
184
echo
185
echo
"User account,$USER_ACCOUNT,has been removed."
186
echo
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本文转自 aaao 51CTO博客，原文链接：http://blog.51cto.com/nolinux/1379372，如需转载请自行联系原作者
