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diff --git a/1088/CH21/EX21.4/Result4.pdf b/1088/CH21/EX21.4/Result4.pdf new file mode 100755 index 000000000..b304ea625 --- /dev/null +++ b/1088/CH21/EX21.4/Result4.pdf @@ -0,0 +1,113 @@ + ans =
+
+ 1.
+
+-->exec('Example4.sci')
+
+-->clear
+
+-->flag=1
+ flag =
+
+ 1.
+
+-->mode(-1)
+Current date is 23-Jun-2013
+
+Welcome to the Textbook Companionship Project 2013
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Book Title : UNIX CONCEPTS AND APPLICATIONS
+
+ Book Edition : 4
+
+ Book Author : Sumitabha Das
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Code Author : Pranav Bhat T
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+ Chapter Number : 21
+
+ Chapter Title : Advanced Shell Programming
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+Example 4 : Show the method of using exec command to make many streams
+
+ ****************************************************************
+
+ 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
+# Script: countpat.sh -- Uses exec to handle multiple files
+#
+exec > $2 # Open file 1 for storing selected lines
+exec 3> $3 # Open file 3 for storing patterns not found
+exec 4> $4 # Open file 4 for storing invalid patterns
+
+[ $# -ne 4 ] && { echo "4 arguments required" ; exit 2 ; }
+
+exec < $1 # Redirecting output
+while read pattern ; do
+ case "$pattern" in
+ ????) grep $pattern emp.lst ||
+ echo $pattern not found in file 1>&3 ;;
+ *) echo $pattern not a four-character string 1>&4 ;;
+ esac
+done
+exec > \/dev/tty # Redirects standard output back to terminal
+echo Job Over
+
+# type the following command in the command line interpreter as soon as it appears
+ " h.sh " [COMMANDLINE ARGUMENTS][ENTER]
+
+
+$ 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)
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