Question: PLEASE HELP! C PROGRAM ONLY, PLEASE!!! TNX! Create 2 programs with the following functionalities: Prog1.c: (1st new code to be written) Open up a new

PLEASE HELP! C PROGRAM ONLY, PLEASE!!! TNX!

Create 2 programs with the following functionalities:

Prog1.c: (1st new code to be written)

  1. Open up a new file, test.txt, for reading and writing (and with a permission mode of 0644)
  2. Repeat the following steps 10 times
    1. Write a string abcdefg to the file
    2. Wait 2 seconds using sleep() call
    3. Change the files permission mode to 0666
    4. Wait 2 seconds using sleep() system call
    5. Link the file test.txt with a different file name tset.txt using the link system call
    6. Wait 2 seconds using the sleep() system call
    7. Unlink the file name tset.txt using the unlink system call
    8. Wait 2 seconds using the sleep() system call
    9. Read 80 characters from test.txt

Prog2.c:

Modify the template program, lookout.c below these questions with the following additional capabilities

  1. Repeat the following steps 100 times
    1. Wait 1 seconds using sleep() call
    2. Call stat system call to extract the file attributes against test.txt
    3. If you find any changes in any of the attributes,
      1. Print the information on which attribute is changed. Make sure to print the previous value and the new value (i.e., the changed attribute value). There may exist more than 1 attribute values changed.

prog2.c (2nd code to be modified)

// lookout -- print message when file changes

#include

#include

#include

#define MFILE 10

void cmp(const char *, time_t); struct stat sb;

int main(int argc, char **argv) { int j; time_t last_time[MFILE+1];

if (argc < 2 ){

fprintf(stderr, "usage: lookout filename ... ");

exit(1);

}

//int stat(const char *path, struct stat *buf);

if (--argc > MFILE ){

fprintf(stderr, "lookout: too many filenames ");

exit(1);

} //Initialization for(j = 1, j <= argc; j++;) if(stat(argv(j), &sb) == -1) { fprintf(stderr, "lookout: couldn't stat %s ", argv(j)); exit(1); } last_time(j) = sb.st_mtime; //loop until file changes for(;;) { for(j = 1; j <= argc; j++) cmp(argv(j), last_time(j)); /*rest for 60 SECONDS "sleep" is a standard UNIX library routine */ sleep(60); } }

void cmp(const char *name, time_t last) { /*as long as statics about the file can be read check the modification time */ if(stat(name, &sb) == -1 || sb.st_mtime != last) { fprintf(stderr, "lookout: %s changed ", name); exit(0); } }

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