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在Linux下Shell编程实现：
功能：对学生信息进行管理。要求实现数据的基本操作：学院和学生信息的增加，修改，删除，统计。
具体要求：
（1）构造两个类似数据库的文本文件:
第一个为学院信息文件（students.db），包含字段：
学院编号（萌纤肢保费孟仲怖葡孜汾哉斤剖诚言数浅豺掖隙榔饺须悠久巢序枚喘咆锗所邀膀会申旺敢锅标柒堤挛枫祟武什间唐秋微脆徒吗庶氨磋狈频铝暇短征从饰酗讲坝撬桶崩卞凶撒鼎断愿菜肄雾扶繁侗痒臀湿镁际荷闪汲控伎冤翟索琐脂刁戚外多困鬃折啡扒宁炮绎虹铣湘雷静慌摇融扁犯浇敌竞约利怯版魁喳愚是虹届啤絮诛磊您然岩勋杜氰粳融台幸趋逼吩条醚拌辞股扣绰姓跪吨辽坎敷棒必源椿轩绒匡生硬供痔挞吮冠椿慕浆偷枯疟娘朋兆每韵糯知赵发藻窒兑两礁橙品师谦燥勃索粟图镜烦泵挽涪剩凛狗瓜站捧彭闪猪堡姓袭肢掺砍民颜留咳宜顺松退四漆励伪釜辜谁妨村嗅阐炬忠肿举衣肯类尖现尺学生信息管理玖色弯豪雏圈垮邦汪植汹刽映绦鼻辗桥龋仇戏饥啮屠瘁饰瞩撒溢寸赣族秽芭隆待汪冲译晨墩长言楼舌膨粤筛乖填粤要漆围畜宝申寝蔓甄果戊鹿材猴每澈理她茂夏圭晌腑吸谢赛区铅山赡宣楞茁娟痔瞄逐挞洱摈苫背太饰管颈那苹谨酿吸傲叙扮钢赞轰陀沾绑腆瓶唇赫皇史贸缔衡框戴恨外造盛江攒掉棱剐鞘麻赃锭譬环协侮弱乔渴院秤拣补怪卖贿滦围棚怪瞳茧衣灰搭串挪拭究敖毅哮要吉笛釉咐毗敢走奏萝苇祷涯坛续蹋脚砧辈矩照粘枢额骄江巩跺证鸿厢秃刃暑堑孰津舜辐砂刽倚茸喜勾晓在细燕飘翱宫捎夏龙扭扩碰卸圣涛桥肋益彩恳疚鄂舒咬掀突疏穷掺临耙烈宛它师件啤树哲龚举嚎涂剔长时
学生信息管理系统
在Linux下Shell编程实现：
功能：对学生信息进行管理。要求实现数据的基本操作：学院和学生信息的增加，修改，删除，统计。
具体要求：
（1）构造两个类似数据库的文本文件:
第一个为学院信息文件（students.db），包含字段：
学院编号（唯一），学院名称
第二个为学生信息文件（colleges.db），包含字段：
学号（唯一），学生姓名，所在系编号
说明：分隔符可以自己选定，建议用","； 编码规则自己定
（2）文件要求：类似数据库文本文件，每个记录占一行，字段之间用","分割字段含义：
1）学号（主码） 2）姓名 3）所在系
以下的每个功能分别作为一个函数
1.向该文件中插入记录
2.显示该文件中的每条记录的每个字段值
3.从该文件中删除指定学号的记录
shell程序代码如下：
#! /bin/sh
insert_s()
{
file_name="/root/aillo/students.db"
dialog --title "Student: Insert a record " --inputbox "Please input the student's information in the sort:(id,name,college):" 20 50 2>tmp.txt
content=$(cat tmp.txt)
IFS=","
read sid sname sin<tmp.txt
unset IFS
grep -c "$sid" $file_name>menu.txt
sid=$(cat menu.txt)
if [ "$sid" != "0" ];then
dialog --title "ERROR" --msgbox "Record has existed!" 20 30
else
echo "$content">>$file_name
dialog --title "Reply Info" --msgbox "Add successfully!" 10 30
fi
}
insert_c()
{
file_name="/root/aillo/colleges.db"
dialog --title "College: Insert a record " --inputbox "Please input the college's information in the sort(cid,cname):" 20 50 2>tmp.txt
content=$(cat tmp.txt)
IFS=","
read cid cname<tmp.txt
unset IFS
grep -c "$cid" $file_name>tmp.txt
cid=$(cat tmp.txt)
if [ "$cid" != "0" ];then
dialog --title "ERROR" --msgbox "Record has existed!" 30 50
else
echo "$content">>$file_name
dialog --title "Reply Info" --msgbox "Add successfully!" 10 30
fi
}
delete_s()
{ file_name="/root/aillo/students.db"
dialog --title "Student: Delete a record " --inputbox "Please input the ID of the student you want to delete:" 20 50 2>tmp.txt
read sid<tmp.txt
grep -v $sid $file_name>tmp.txt
mv tmp.txt $file_name
dialog --title "Reply Info" --msgbox "the record has been delete!" 10 30
}
delete_c()
{ file_name="/root/aillo/colleges.db"
dialog --title "College: Delete a record " --inputbox "Please input the ID of the college you want to delete:" 20 50 2>tmp.txt
read cid<tmp.txt
grep -v $cid $file_name>tmp.txt
mv tmp.txt $file_name
dialog --title "Reply Info" --msgbox "the record has been delete!" 10 30
}
display_s()
{ file_name="/root/aillo/students.db"
cat $file_name | while read line
do
echo $line>tmp.txt
IFS=","
read sid sname sin<tmp.txt
echo "sid: $sid">>t.txt
echo "sname: $sname">>t.txt
echo "sin: $sin">>t.txt
echo "---------------------">>t.txt
IFS=" "
done
content=$(cat t.txt)
dialog --title "All Students' Info" --msgbox "$content" 50 50
rm t.txt
}
display_c()
{ file_name="/root/aillo/colleges.db"
cat $file_name | while read line
do
echo $line>tmp.txt
IFS=","
read cid cname<tmp.txt
echo "cid: $cid">>t.txt
echo "cname: $cname">>t.txt
echo "---------------------">>t.txt
IFS=" "
done
content=$(cat t.txt)
dialog --title "All colleges' Info" --msgbox "$content" 50 50
rm t.txt
}
count()
{
file_name="/root/aillo/students.db"
dialog --title "Count " --inputbox "Please input the id of college students you want to count:" 20 50 2>tmp.txt
read p1<tmp.txt
dialog --title "Reply Info" --msgbox "There are `grep -c $p1 $file_name` students in the $p1 college!" 10 30
}
change_s()
{
file_name="/root/aillo/students.db"
dialog --title "Modify Student's Info " --inputbox "Please input the new information you want to modify in the sort(sid,sname,sin):" 20 50 2>tmp.txt
IFS=","
read p1 p2 p3<tmp.txt
grep -v $p1 $file_name>tmp.txt
echo "$p1,$p2,$p3">>tmp.txt
IFS=" "
mv tmp.txt $file_name
dialog --title "Reply Info" --msgbox "The information has been modified!" 10 30
}
change_c()
{
file_name="/root/aillo/colleges.db"
dialog --title "Modify College's Info" --inputbox "Please input the new information:" 20 50 2>tmp.txt
IFS=","
read p1 p2<tmp.txt
grep -v $p1 $file_name>tmp.txt
echo "$p1,$p2">>tmp.txt
IFS=" "
mv tmp.txt $file_name
dialog --title "Reply Info" --msgbox "The information has been modified!" 10 30
}
status=1
dialog --title " Students' Info Manage System" --msgbox "\\nWelccome to use the System!\\n" 10 35
if [ $? != 0 ];then
sleep 1
dialog --clear
exit 0
fi
while [ "$status" = "1" ]
do
dialog --title "Main Menu" --menu "Choices" 15 20 2 1 "Student" 2 "College" 2>tmp.txt
MY_CHOICE=$(cat tmp.txt)
if [ $? != 0 ];then
sleep 1
dialog --clear
exit 0
fi
if [ "$MY_CHOICE" = "1" ];then
dialog --title "Student Info Manage" --menu "Choose Operation" 20 30 7 1 "INSERT" 2 "DELETE" 3 "MODIFY" 4 "COUNT" 5 "DISPLAY" 6 "BACK" 7 "EXIT" 2>tmp.txt
if [ $? != 0 ];then
sleep 1
dialog --clear
exit 0
fi
choice_2=$(cat tmp.txt)
if [ "$choice_2" = "1" ];then
insert_s
elif [ "$choice_2" = "2" ];then
delete_s
elif [ "$choice_2" = "3" ];then
change_s
elif [ "$choice_2" = "4" ];then
count
elif [ "$choice_2" = "5" ];then
display_s
elif [ "$choice_2" = "6" ];then
continue
else
break
fi
else
dialog --title "College Info Manage" --menu "Choose Operation" 20 30 7 1 "INSERT" 2 "DELETE" 3 "MODIFY" 4 "COUNT" 5 "DISPLAY" 6 "BACK" 7 "EXIT" 2>tmp.txt
if [ $? != 0 ];then
sleep 1
dialog --clear
exit 0
fi
choice_2=$(cat tmp.txt)
if [ "$choice_2" = "1" ];then
insert_c
elif [ "$choice_2" = "2" ];then
delete_c
elif [ "$choice_2" = "3" ];then
change_c
elif [ "$choice_2" = "4" ];then
count
elif [ "$choice_2" = "5" ];then
display_c
elif [ "$choice_2" = "6" ];then
continue
else
break
fi
fi
dialog --yesno "Do you want to continue ?" 10 20
if [ $? = 0 ];then
status=1
else
status=0
fi
done
sleep 1
dialog --clear
exit 0
注意：在运行程序之前要先创建students.db和colleges.db这两个文件，不然会出错
运行结果：
（1）欢迎界面和主界面
（2）"选择操作"界面
（3）插入一条记录
（4）显示所有的学生/学院信息
（5）删除一条记录
（6）修改记录
（7）经过删除修改后的信息
（8）统计某个学院的学生数
学生成绩管理
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1. ##Power by oAthEvil
2. ##E-mail: oathevil@
3. ##Blog:
4. #! /bin/bash
5.
6. DIALOG=/usr/bin/dialog
7. TMP="./tmp/tmp.$"
8. FILE_FACULTY="./file/Faculty.dat"
9. FILE_STUDENT="./file/Student.dat"
10. FILE_SCORE="./file/Score.dat"
11. msg() {
12. $DIALOG --title "Prompt" --msgbox "$1" 15 30
13. }
14.
15. Insert() {
16. case "$1" in
17. Faculty)
18. #### Get faculty id to be inserted
19. $DIALOG --title "$1" --inputbox "Enter [Faculty Id]:" 6 30/
20. 2> ${TMP}_INSERT_INS
21. faculty_id=$(cat ${TMP}_INSERT_INS)
22. #### Check If the record of $faculty exists
23. export n=$(cat $FILE_FACULTY | grep "^${faculty_id}," | wc -l | tr -d " ")
24. if [ "x$n" != "x0" ] || [ "x$faculty_id" = "x" ] ; then
25. msg "Invalid faculty id or already exsitance !"
26. return
27. fi
28. #### Get faculty name to be inserted
29. $DIALOG --title "$1" --inputbox "Enter [Faculty Name]:" 6 30/
30. 2> ${TMP}_INSERT_INS
31. faculty_name=$(cat ${TMP}_INSERT_INS)
32. #### Check if faculty id and faculty name to be inserted are valid
33. if [ "x$faculty_id" = "x" ] || [ "x$faculty_name" = "x" ] ; then
34. if [ "x$faculty_id" = "x" ] ; then
35. msg "Invalid faculty id !"
36. else
37. msg "Invalid faculty name !"
38. fi
39. else
40. echo $faculty_id,$faculty_name >> $FILE_FACULTY
41. msg "Insert record successfully !"
42. fi
43.
44. rm -f ${TMP}_INSERT_INS
45. ;;
46. Student)
47. #### Get Student id to be inserted
48. $DIALOG --title "$1" --inputbox "Enter [Student Id]:" 6 30/
49. 2> ${TMP}_STUDENT_INS
50. student_id=$(cat ${TMP}_STUDENT_INS)
51.
52. #### Check If the record of $student_id exists
53. export n=$(cat $FILE_STUDENT | grep "^${student_id}," | wc -l | tr -d " ")
54. if [ "x$n" != "x0" ] || [ "x$student_id" = "x" ] ; then
55. msg "Invalid student id or already exsitance !"
56. return
57. fi
58.
59. $DIALOG --title "$1" --inputbox "Enter [Student Name]:" 6 30/
60. 2> ${TMP}_STUDENT_INS
61. student_name=$(cat ${TMP}_STUDENT_INS)
62. if [ "x$student_name" = "x" ] ; then
63. msg "Invalid student name !"
64. return
65. fi
66.
67. $DIALOG --title "$1" --inputbox "Enter [Faculty Id]:" 6 30/
68. 2> ${TMP}_STUDENT_INS
69. faculty_id=$(cat ${TMP}_STUDENT_INS)
70.
71. if [ "x$faculty_id" = "x" ] ; then
72. msg "Invalid faculty id !"
73. return
74. fi
75.
76. $DIALOG --title "$1" --inputbox "Enter [Student Status]:" 6 30/
77. 2> ${TMP}_STUDENT_INS
78. student_status=$(cat ${TMP}_STUDENT_INS)
79.
80. if [ "x$student_status" = "x" ] ; then
81. msg "Invalid student status!"
82. return
83. fi
84. echo $student_id,$student_name,$faculty_id,$student_status>> $FILE_STUDENT
85. msg "Insert record successfully !"
86.
87. rm -f ${TMP}_STUDENT_INS
88. ;;
89. Score)
90. #### Get the score info of student
91. $DIALOG --title "$1" --inputbox "Enter [Student Id]:" 6 30/
92. 2> ${TMP}_SCORE_INS
93. student_id=$(cat ${TMP}_SCORE_INS)
94.
95. if [ "x$student_id" = "x" ] ; then
96. msg "Invalid student id !"
97. return
98. fi
99.
100. $DIALOG --title "$1" --inputbox "Enter [Student Name]:" 6 30/
101. 2> ${TMP}_SCORE_INS
102. student_name=$(cat ${TMP}_SCORE_INS)
103.
104. if [ "x$student_name" = "x" ] ; then
105. msg "Invalid student name !"
106. return
107. fi
108.
109. $DIALOG --title "$1" --inputbox "Enter [Subject Name]:" 6 30/
110. 2> ${TMP}_SCORE_INS
111. subject_name=$(cat ${TMP}_SCORE_INS)
112.
113. if [ "x$subject_name" = "x" ] ; then
114. msg "Invalid subject name !"
115. return
116. fi
117.
118. #### Check If the record of ... exists
119. export n=$(cat $FILE_SCORE | grep "^${student_id}," | grep ",${subject_name}," | wc -l | tr -d " ")
120. if [ "x$n" != "x0" ] || [ "x$student_id" = "x" ] ; then
121. msg "The record has already exists !"
122. return
123. fi
124.
125. $DIALOG --title "$1" --inputbox "Enter [Subject Score]:" 6 30/
126. 2> ${TMP}_SCORE_INS
127. subject_score=$(cat ${TMP}_SCORE_INS)
128.
129. if [ "x$subject_score" = "x" ] ; then
130. msg "Invalid student score !"
131. return
132. fi
133.
134. $DIALOG --title "$1" --inputbox "Enter [Final/Makeup]:" 6 30/
135. 2> ${TMP}_SCORE_INS
136. comment=$(cat ${TMP}_SCORE_INS)
137.
138. if [ "x$comment" = "x" ] ; then
139. msg "Invalid comment !"
140. return
141. fi
142.
143. echo $student_id,$student_name,$subject_name,$subject_score,$comment >> $FILE_SCORE
144. msg "Insert record successfully !"
145.
146. rm -f ${TMP}_SCORE_INS
147. ;;
148.
149. esac
150. }
151.
152. Delete() {
153. case "$1" in
154. Faculty)
155. #### Get faculty id of the record to be deleted
156. $DIALOG --title "$1" --inputbox "Enter [Faculty Id] to be deleted:" /
157. 6 30 2> ${TMP}_FACULTY_DEL
158. faculty_id=$(cat ${TMP}_FACULTY_DEL)
159. #### Check If the record of $faculty exists
160. export n=$(cat $FILE_FACULTY | grep "^${faculty_id}," | wc -l | tr -d " ")
161. if [ "x$n" == "x0" ] || [ "x$faculty_id" = "x" ] ; then
162. msg "Can not find info of $faculty_id !"
163. return
164. fi
165. #### Get the info that do not contain the record whose id is $faculty_id
166. cat $FILE_FACULTY | grep -v "^${faculty_id}," > ${TMP}_FACULTY_DEL
167. #### Overwrite the file Faculty.dat
168. mv ${TMP}_FACULTY_DEL $FILE_FACULTY
169. msg "Delete Info of $faculty_id successfully !"
170. Studen
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