ans  =
 
    1.  
 
-->exec('Example9.sci')
 
 
-->clear
 
-->flag=1
 flag  =
 
    1.  
 
-->mode(-1)
Current date is 17-Jun-2013 
 
Welcome to the Textbook Companionship Project 2013 
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 Book Title                             :       UNIX CONCEPTS AND APPLICATIONS    
 
 Book Edition                         :                                                                           4   
 
 Book Author                          :                                                    Sumitabha Das   
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 Code Author                          :                                                     Pranav Bhat T   
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 Chapter Number                    :                                                                            14   
 
 Chapter Title                         :                                Essential Shell Programming   
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Example 9    :               Show the use of while loop 
 
 ****************************************************************   
 
 Answer    :      
 
 INSTRUCTIONS   :    

1. Here all instructions are preloaded in the form of a demo

Initially the whole perl script is displaying and then 
 the result of the same can be seen in the command line interpreter.

2. PLEASE MAKE SURE THAT THE PERLSCRIPT INTERPRETER
EXISTS IN THE SYSTEM
OR THE COMMAND WOULD NOT WORK 

3. PRESS ENTER AFTER EACH COMMAND to see its RESULT

5. PRESS ENTER AFTER EACH RESULT TO GO TO THE NEXT COMMAND
.............Press [ENTER] to continue.....	UNIX SHELL SIMULATOR(DEMO VERSION WITH PRELOADED COMMANDS)



# Enter the name of the shellscript file whichever you desire  

 #!/bin/sh
# emp5.sh: Shows use of the while loop
#
answer=y
while [ "$answer" = "y" ]   # The control command
do
echo "Enter the code and description: \c">/dev/tty
read code description # Read both together
echo "$code|$description">>newlist  # Append a line to newlist
echo "Enter any more(y/n)? \c">/dev/tty
read anymore
case $anymore in
      y*|Y*) answer=y ;;   # also accepts yes,YES etc
      n*|N*) answer=n ;;  # also accepts no,NO elc
          *) answer=y ;;
esac
done
 
# type the following command in the command line interpreter as soon as it appears 
       "  h.sh     " [COMMANDLINE ARGUMENTS][ENTER]


$ h.sh  [COMMANDLINE ARGUMENTS]             #to execute the perlscript 


   ---------------->Executing ShellScript in Command Line Prompt<-------------- 


$ exit        #To exit the current simulation terminal and return to Scilab console

........# (hit [ENTER] for result)

			BACK TO SCILAB CONSOLE...
Loading initial environment 
-->diary(0)