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PID 的代码
pipe1.c
#include "apue.h"
int
main(void)
{
int n;
int fd[2];
pid_t pid;
char line[MAXLINE];
if (pipe(fd) < 0)
err_sys("pipe error");
if ((pid = fork()) < 0) {
err_sys("fork error");
} else if (
fig8.20
#include "apue.h"
#include
int
main(void)
{
pid_t pid;
if ((pid = fork()) < 0) {
err_sys("fork error");
} else if (pid == 0) { /* child */
if (execl("/home/sar/bin/testinterp",
fig8.3
#include "apue.h"
int glob = 6; /* external variable in initialized data */
int
main(void)
{
int var; /* automatic variable on the stack */
pid_t pid;
var = 88;
printf("before vfork\n"); /*
fig8.8
#include "apue.h"
#include
int
main(void)
{
pid_t pid;
if ((pid = fork()) < 0) {
err_sys("fork error");
} else if (pid == 0) { /* first child */
if ((pid = fork()) < 0)
err_s
fig8.12
#include "apue.h"
static void charatatime(char *);
int
main(void)
{
pid_t pid;
if ((pid = fork()) < 0) {
err_sys("fork error");
} else if (pid == 0) {
charatatime("output from child\n");
}
fig11.2
#include "apue.h"
#include
pthread_t ntid;
void
printids(const char *s)
{
pid_t pid;
pthread_t tid;
pid = getpid();
tid = pthread_self();
printf("%s pid %u tid %u (0x%x)\n", s, (u
fig8.1
#include "apue.h"
int glob = 6; /* external variable in initialized data */
char buf[] = "a write to stdout\n";
int
main(void)
{
int var; /* automatic variable on the stack */
pid_t pid;
var
fig10.6
#include "apue.h"
#include
static void sig_cld(int);
int
main()
{
pid_t pid;
if (signal(SIGCLD, sig_cld) == SIG_ERR)
perror("signal error");
if ((pid = fork()) < 0) {
perror("fo
fig13.1
#include "apue.h"
#include
#include
#include
void
daemonize(const char *cmd)
{
int i, fd0, fd1, fd2;
pid_t pid;
struct rlimit rl;
struct sigaction sa
fig8.6
#include "apue.h"
#include
int
main(void)
{
pid_t pid;
int status;
if ((pid = fork()) < 0)
err_sys("fork error");
else if (pid == 0) /* child */
exit(7);
if (wait(&status)