How to read user keyboard input inside the case?


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Homework and Emergencies Homework & Coursework Questions How to read user keyboard input inside the case?
# 1  
How to read user keyboard input inside the case?

I need to Write a shell script that allows some system-administration tasks to be preformed automatically from a menu-driven interface. with automated following tasks:

Copy directory tree
Delete files or directories
Output Information (this part is done )

*Copy directory tree
The “Copy directory tree” selection should prompt for two arguments: src & dest.
The script then copies all the files from src, including all the subdirectories, to dest,
creating all the necessary sub-directories.
The script must perform necessary argument validation, assuming that the first argument may be either a directory name or the name of a regular file, while the second may be only a directory name.

my problem with this assignment is I can not read user input inside the "case" options.
I think I need to ask user to enter src and dest for copying the files.

this is my code so far

Code:
#!/bin/sh
clear
	echo "\t `date "+%d/%m/%Y"`"
	echo "\t Hostname Machine: `hostname`"
	echo "\t user: `whoami` "
	echo "\t M A I N - M E N U"
	echo "\t 1.Copey Directory Tree"
	echo "\t 2.Delete Files or Directories"
	echo "\t 3.Output Information"
while true ; do
	echo -n "\t Please enter an option [ 1 - 4 ] : "
	read opt

	case "$opt" in
		1) echo "Enter the source and destination for copying files" ;; 
		
		#read src dest ;;
		#echo "$src" ;;
		#echo "$dest" ;;

		2)  ;;

		3) echo "\t the number of possible users on the system: `cat /etc/passwd |wc -l` \n\t the number of current user on the system : `who | wc -l`\n\t the number of processes running: `ps -e | wc -l`"  ;;


		*) exit ;; 
	esac
done


Langara College , Vancouver , Canada , Hengameh Hamavand , CPSC 1280
# 2  
I tried with following modification and able to read user input and print them:-

Code:
#!/bin/sh
clear
echo "\t `date "+%d/%m/%Y"`"
echo "\t Hostname Machine: `hostname`"
echo "\t user: `whoami` "
echo "\t M A I N - M E N U"
echo "\t 1.Copey Directory Tree"
echo "\t 2.Delete Files or Directories"
echo "\t 3.Output Information"

while true ; do
        echo -n "\t Please enter an option [ 1 - 4 ] : "
        read opt

        case "$opt" in
                1) echo "Enter the source and destination for copying files"
                   read src
                   read dest
                   echo "$src"
                   echo "$dest"
                   ;;
                2)  ;;
                3) echo "\t the number of possible users on the system: `cat /etc/passwd |wc -l` \n\t the number of current user on the system : `who | wc -l`\n\t the number of processes running: `ps -e | wc -l`"  ;;
                *) exit ;;
        esac
done

This User Gave Thanks to Yoda For This Post:
# 3  
how should I apply this part to the script?

The “Delete files or directories” selection should prompt for a list of files or directories to be deleted. The script asks user for confirmation before deleting a file or a whole directory. The script must perform reasonable argument validation.

I tried to read the list of files and directories in a string but it is pretty hard to split the string based on space and put them in an array and then check them one by one and delete them. Also I was thinking to run a while loop to ask user to enter the name of file and then delete it and again repeat the job but it is not a nice way.
would you give me some clue?

Code:
#!/bin/sh
clear
	echo "\t `date "+%d/%m/%Y"`"
	echo "\t Hostname Machine: `hostname`"
	echo "\t user: `whoami` "
	echo "\t M A I N - M E N U"
	echo "\t 1.Copey Directory Tree"
	echo "\t 2.Delete Files or Directories"
	echo "\t 3.Output Information"
while true ; do
	echo -n "\t Please enter an option [ 1 - 4 ] : "
	read opt

	case "$opt" in
		1) echo "Enter the source of the files and destination for copying "
                   read src dest
                if [ -n "$src" -a -n "$dest" ]
		then
			if [ -d "$src" -o -f "$src" -a -d "$dest" ]
			then
			cp -r "$src" "$dest"
			else
			echo "Enter the valid file or directory addresses" 
			fi
		else
		echo "please enter valid address as a source and destination to copy the files "
			fi ;;
		2) echo "enter the name of files want to be deleted"
		read files
		for f in "$files"
		do
		echo "$f\n"
		done  
		 ;;

		3) echo "\t the number of possible users on the system: `cat /etc/passwd |wc -l`"
		   echo "\t the number of current user on the system : `who | wc -l`"
		   echo "\t the number of processes running: `ps -e | wc -l`"
			 ;;


		*) exit ;; 
	esac
done

---------- Post updated at 02:13 AM ---------- Previous update was at 12:50 AM ----------

Code:
2) echo "enter the name of files want to be deleted"
		read a
		
	for CHARACTER in $a ; do
	  if [ -f $CHARACTER -o -d $CHARACTER ] ; then
		rm -ir $CHARACTER
	else
	echo "$CHARACTER is not a valid file or directory"
	fi
	done
		 ;;

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