Script to show the case control structure

echo enter number
read a
echo
while [ $a -eq 1 ]
do
echo choices are:-
echo 1. To copy the files
echo 2. To show list of files
echo 3. To show use of head
echo *. Exit
echo
echo enter the choice
read ch
case $ch in
1) echo enter the source and target file
read a b
if cp $a $b
then
echo file copied successfully
fi
;;
echo
2) echo list of files with permission:-
ls -l
;;
echo
3) echo Enter the file
read k
echo Showing the 10 lines of files
head $k
;;
echo
*) exit ;;
esac
done

Output:-

enter number
1

choices are:-
1. To copy the files
2. To show list of files
3. To show use of head
*. Exit

enter the choice
2

list of files with permission:-
total 686
-rw-r--r-- 1 root root 0 Mar 20 14:51 ?[?1049l?
-rw-r--r-- 1 root root 0 Mar 20 14:51 ?[?12l?[?25h?[?1049l?]0
-rw-r--r-- 1 root root 55 Apr 6 15:44 2713
-rw-r--r-- 1 root root 0 Mar 21 15:13 2744
-rw-r--r-- 1 root root 0 Mar 21 15:06 2912
-rw-r--r-- 1 root root 0 Mar 21 15:07 2921
-rw-r--r-- 1 root root 0 Mar 21 15:10 2935
-rw-r--r-- 1 root root 52 Mar 30 15:15 3gt
-rw------- 1 root root 729 Feb 21 15:13 anaconda-ks.cfg
-rw-r--r-- 1 root root 23 Mar 21 14:24 anand1
-rw-r--r-- 1 root root 90 Apr 4 15:17 asd
-rw-r--r-- 1 root root 449 Apr 4 16:00 awk
-rw-r--r-- 1 root root 6 Feb 22 14:23 cmd
-rw-r--r-- 1 root root 0 Feb 27 15:06 cmdfile
-rw-r--r-- 1 root root 0 Feb 22 14:24 com
-rw-r--r-- 1 root root 469 Apr 6 15:31 database
drwxr-xr-x 3 root root 4096 Apr 10 16:25 Desktop
-rw-r--r-- 1 root root 69 Mar 16 14:45 emp.lst
-rw-r--r-- 1 root root 23 Mar 19 14:20 emp.txt
-rw-r--r-- 1 root root 18 Feb 22 14:14 end
-rw-r--r-- 1 root root 214 Mar 30 15:42 even
-rw-r--r-- 1 root root 30 Mar 1 14:49 govind
-rw-r--r-- 1 root root 557 Apr 10 15:56 grep
drwxr-xr-x 4 root root 4096 Mar 14 14:47 heena
-rw-r--r-- 1 root root 105 Mar 30 15:13 if
-rw-r--r-- 1 root root 29101 Feb 21 15:13 install.log
-rw-r--r-- 1 root root 0 Feb 21 14:57 install.log.syslog
-rw-r--r-- 1 root root 153 Feb 28 14:43 jyoti
-rw-r--r-- 1 root root 30 Mar 1 14:59 kanha
-rw-r--r-- 1 root root 164 Mar 1 14:21 kanhaiya
-rw-r--r-- 1 root root 0 Feb 28 14:21 keeru
-rw-r--r-- 1 root root 30 Mar 1 14:29 keshav
-rw-r--r-- 1 root root 30 Mar 1 14:48 madhav
-rw-r--r-- 1 root root 19 Mar 13 14:25 main
-rw-r--r-- 1 root root 30 Apr 11 15:29 meenu
-rw-r--r-- 1 root root 12 Mar 20 15:05 nav
-rw-r--r-- 1 root root 80 Feb 28 14:40 neelam
-rw-r--r-- 1 root root 34 Feb 22 14:13 pa
-rw-r--r-- 1 root root 27 Mar 13 14:25 pai
-rw-r--r-- 1 root root 34 Apr 3 15:15 radhe
-rw-r--r-- 1 root root 34 Apr 11 15:13 radhika
-rw-r--r-- 1 root root 12 Mar 13 14:26 rain
-rw-r--r-- 1 root root 20 Apr 5 15:08 result
-rw-r--r-- 1 root root 188416 Mar 21 15:13 wc.sh
-rw-r--r-- 1 root root 379 Apr 10 16:27 sed
-rwx-w---x 1 root root 69632 Mar 20 15:19 sorting.sh
-rw-r--r-- 1 root root 185 Mar 19 14:52 stu.lst
-rw-r--r-- 1 root root 57 Mar 16 15:16 stu.txt
-rw-r--r-- 1 root root 59 Mar 30 14:37 sum
-rw-r--r-- 1 root root 540 Apr 11 15:26 switch
-rw-r--r-- 1 root root 216 Mar 21 14:37 wc


choices are:-
1. To copy the files
2. To show list of files
3. To show use of head
*. Exit

enter the choice
3

Enter the file
Database

Showing the 10 lines of files
Name |Age |salary |contact no.
Meenu |23 |40000 |7206297384
jyoti |20 |35000 |9813456782
mamta |21 |32000 |9017720166
kavita |22 |30000 |9014445623
neha |23 |34500 |8014465777
sanchi |24 |23000 |9014356278
nishtha |25 |24567 |7289786254
mohina |19 |45000 |9824568753
mohit |22 |43000 |7013442455

choices are:-
1. To copy the files
2. To show list of files
3. To show use of head
*. Exit

enter the choice
7
[root@localhost ~]#