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ans =
1.
-->exec('Example9.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 : 23
Chapter Title : Systems programming I- Files
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Example 9 : Show the method of using lstatcall and struct stat to display file attributes
****************************************************************
Answer :
INSTRUCTIONS :
1.These programs are part of systems programming in Unix and the commands have NO EQUIVALENT IN SCILAB
2.However if possible some selected programmes have been TRIED TO BE IMPLEMENTED
3.For most of the programmes whose equivalent is NOT THERE IN SCILAB,only the output has been printed as given in the textbook w
ith no interactive input as in the programme below
4.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
5.The inconvenience is regretted.
.............Press [ENTER] to continue..... UNIX SHELL SIMULATOR(DEMO VERSION WITH PRELOADED COMMANDS)
$ cat attributes.c # to open the file emp.lst /* Program: attributes.c -- Uses lstat call and struct stat to display file attributes */
#include <stdio.h>
#include <sys/stath>
void quit(char *,int);
int main(int argc, char**argv) {
struct stat statbuf; /*We'll use lstat to populate this*/
if (lstat(argv[1], &statbuf) == -1)
quit("Couldn't stat file", 1);
printf("File: %s\n",argv[1]);
printf("Inode number: %d \n",statbuf.st_ino);
printf("UID: %d ",statbuf.st_uid);
printf("GID: %d \n",statbuf.st_gid);
printf("Types and Permissions: %o\n",statbuf.st_mode);
printf("Number of links: %d \n",statbuf.st_nlink);
printf("Size in bytes: %d\n",statbuf.st_size);
printf("Blocks allocated: %d\n",statbuf.st_blocks);
printf("Last Modification Time: %s\n",ctime(&statbuf.st_mtime));
printf("Last Access Time: %s\n",ctime(&statbuf.st_atime));
exit(0);
}
$ cc dir.c
Here it displays a mock value since it is windows
$ a.out /etc/passwd
File: /etc/passwd
Inode number: 54412
UID: 0 GID: 3
Type and Permissions: 100755
Number of links: 1
Size in bytes: 10803
Blocks allocated: 22
Last Modification Time: Tue Nov 19 16:29:13 2002
Last Access Time: Tue NOv 26 19:57:01 2002
$ 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)
|
