uhziel

import urllib

webpage = urllib.urlopen('http://www.baidu.com')

pagefile = open('baidu.html', 'w')
for lines in webpage.readlines():
	pagefile.write(lines)

pagefile.close()
webpage.close()

uhziel

#include "apue.h"
#include <dirent.h>

int main(int argc, char *argv[])
{
        DIR *dp;
        struct dirent *dirp;

        if (argc != 2)
        {

uhziel

#include "apue.h"

#define BUFFSIZE        4096

int main()
{
        int n;
        char buf[BUFFSIZE];

        while ((n = read(STDIN_FILENO, buf, BUFFSIZE)) > 0)

uhziel

#include "apue.h"

int main()
{
        int c;

        while ((c = getc(stdin)) != EOF)
        {
                if (putc(c, stdout) == EOF)
                {

uhziel

#include "apue.h"

int main()
{
        printf("hello world from process ID %d\n", getpid());
        return 0;
}

uhziel

#include "apue.h"
#include <sys/wait.h>

int main()
{
        char buf[MAXLINE];
        pid_t pid;
        int status;

        printf("%% ");

uhziel

#include "apue.h"
#include <errno.h>

int main(int argc, char *argv[])
{
        errno = E2BIG;
        printf("E2BIG: %s", strerror(errno));
        errno = EAGAIN;
        perror(argv[0]);
        return 0;

uhziel

#include "apue.h"

int main()
{
        printf("uid = %d, gid = %d\n", getuid(), getgid());
        return 0;
}

uhziel

#include "apue.h"
#include <sys/wait.h>

static void sig_int(int signo);

int main()
{
        char buf[MAXLINE];
        pid_t pid;
        int status;

uhziel

#include "apue.h"

int main()
{
        if (lseek(STDIN_FILENO, 0, SEEK_CUR == -1))
        {
                printf("cannot seek\n");
        }
        else
        {