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diff --git a/1088/CH24/EX24.10/Example10.sce b/1088/CH24/EX24.10/Example10.sce
new file mode 100755
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+++ b/1088/CH24/EX24.10/Example10.sce
@@ -0,0 +1,73 @@
+clear
+flag=1
+mode(-1)
+clc
+
+printf("Example 10    :    Show the effect of using dup command to achieve both input and output redirection\n")
+disp("****************************************************************")
+disp("Answer    :   ")
+disp("INSTRUCTIONS   : ")
+halt(' ')
+disp("1.These programs are part of systems programming PURELY in Unix and the commands have NO EQUIVALENT IN SCILAB")
+halt(' ')
+disp("2.However the .c files which are displayed here are also made into a seperate file.If you are a unix user then try compiling and running the programme with gcc or cc compiler")
+halt(' ')
+disp("3.The outputs displayed here are just MOCK OUTPUTS which are DISPLAYED IN THE TEXTBOOK")
+halt(' ')
+disp("4.The inconvenience is regretted.")
+halt('.............Press [ENTER] to continue.....')
+halt("")
+clc
+printf("\tUNIX SHELL SIMULATOR(DEMO VERSION WITH PRELOADED COMMANDS)\n\n\n")
+i=0
+i=i+1;f(i)='/* Program: dup.c -- Uses dup to achieve both input and output redirection Closes standard streams first before using dup */'
+i=i+1;f(i)='#include <stdio.h>'
+i=i+1;f(i)='#include <unistd.h>'
+i=i+1;f(i)='#include <sys/stat.h>'
+i=i+1;f(i)='#include <fcntl.h>'
+i=i+1;f(i)='#define MODE600 (S_IRUSR | S_IWUSR)'
+i=i+1;f(i)=''
+i=i+1;f(i)='int main(int argc,char **argv) {'
+i=i+1;f(i)='    int fd1,int fd2;'
+i=i+1;f(i)='    fd1 = open(argv[1],O_RDONLY);'
+i=i+1;f(i)='    fd2 = open(argv[2], O_WRONLY | O_CREAT |O_TRUNC, MODE600);'
+i=i+1;f(i)='    '
+i=i+1;f(i)='    close(STDIN_FILENO);    /*This should return descriptor 0 */'
+i=i+1;f(i)='    dup(fd1);'
+i=i+1;f(i)='    close(STDOUT_FILENO);   /*This should return descriptor 1 */'
+i=i+1;f(i)='    dup(fd2);'
+i=i+1;f(i)='    '
+i=i+1;f(i)='    execvp(argv[3], &argv[3]);   /* Execute any filter */'
+i=i+1;f(i)='    printf('+ascii(34)+'Failed to exec filter'+ascii(34)+');'
+i=i+1;f(i)='}'
+n=i
+    
+
+printf("\n\n$ cat dup.c      # to open the file emp.lst")
+halt(' ')
+u=mopen('dup.c','wt')
+for i=1:n
+    mfprintf(u,"%s\n",f(i))
+    printf("%s\n",f(i))
+end
+mclose(u)
+halt('')
+clc
+
+halt(' ')
+ printf("$ cc shell.c")
+ halt(' ')
+ printf("$ a.out   /etc/passwd   passwd.cnt  wc  -1")
+ halt(' ')
+ printf("cat passwd.cnt")
+halt(' ')
+printf("        37   /etc/passwd")
+halt(' ')
+printf("\n\n\n$ exit        #To exit the current simulation terminal and return to Scilab console\n\n")
+halt("........# (hit [ENTER] for result)")
+//clc()
+
+printf("\n\n\t\t\tBACK TO SCILAB CONSOLE...\nLoading initial environment')
+sleep(1000)
+
+