ans  =
 
    1.  
 
-->exec('Example13.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 12    :                                      Show the use of set command and the here documenting 
 
 ****************************************************************   
 
 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)




$ cat limitlist      # to open the file emp.lst 01|accounts|6213
02|admin|5423
03|marketing|6521
04|personnel|2365
05|production|9876
06|sales|1006

# Enter the name of the shellscript file whichever you desire  

 #! /bin/sh
# valcode.sh : Uses a here document to look up for a code list
#
IFS="|"     # Reset field seperator
while echo "Enter department code  : \c":do
read dcode
set -- `grep "^$dcode" << limit
01|accounts|6213
02|admin|5423
03|marketing|6521
04|personnel|2365
05|production|69876
06|sales|1006
limit`
              # Closing ` marks end of standard input
   case $# in
            3) echo "Department name     : $2\nEmp-id of head of dept : $3\n"
               shift 3;;    #Flush out the positional parameters
            *) echo "Invalid code"  ; continue
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)