ans  =
 
    1.  
 
-->exec('Example11.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 11    :                                      Show the use of positional parameters in shells 
 
 ****************************************************************   
 
 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 emp.lst      # to open the file emp.lst 2233|a.k.shukla             |g.m.        |sales           |12/12/52|6000
9876|jai sharma             |director  |production |12/03/50|7000
5678|sumit chakrobarty|d.g.m      |marketing  |19/04/43|6000
2356|barun sengupta      |director  |personnel  |11/05/47|7800
5423|n.k. gupta              |chairman |admin       |30/08/56|5400
1006|chanchal singhvi   |director  |sales          |03/09/38|6700
6213|karuna ganguly      |g.m.        |accounts   |05/06/62|6300
1265|s.n. dasgupta         |manager  |sales          |12/09/63|5600
4290|jayant Choudhary  |executive |production|07/09/50|6000
2476|anil aggarwal        |manager   |sales          |01/05/59|5000
6521|lalit chowdury       |director    |marketing |26/09/45|8200
3212|shyam saksena      |d.g.m        |accounts   |12/12/55|6000
3564|sudhir Agarwal     |executive  |personnel  |06/07/47|7500
2345|j.b. saxena            |g.m.           |marketing |12/03/45|8000
0110|v.k. agrawal         |g.m.           |marketing  |31/02/40|9000

# Enter the name of the shellscript file whichever you desire  

 #! /bin/sh
# emp6.sh -- Using a for loop with positional parameters
#
for pattern in "$@" ; do             # decided not to use $* in the previous section
    grep "$pattern" emp.lst||echo "pattern $pattern not found"
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)