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#include <unistd.h>
#include <fcntl.h>
int access(const char *pathname, int mode);
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/* test.c */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
int main(int argc, char *argv[])
{
if (argc < 2) {
printf("Usage: ./test filename\n");
exit(1);
}
if (access(argv[1], F_OK) == -1) {
puts("File not exists!");
exit(2);
}
if (access(argv[1], R_OK) == -1)
puts("You can't read the file!");
else
if (access(argv[1], R_OK | W_OK) != -1)
puts("You can read and write the file");
else
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#include<stdio.h>
int main(void)
{
printf("Hello World!");
return 0;
}
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