Linux系统编程 进度%60

Linux系统编程篇/02目录IO/mkdir.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+int main(int argc, char *argv[])
+{
+  int ret;
+  if(argc !=2 )
+  {
+    printf("uage:%s <name file\n",argv[0]);
+    return -1;
+  }
+  ret = mkdir(argv[1],0666);
+  if(ret<0)
+  {
+    printf("mkdir is error\n");
+  }
+
+  printf("mkdir is ok\n");
+  return 0;
+}

Linux系统编程篇/02目录IO/openAndCloseDir.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+
+
+
+int main(int argc, char *argv[])
+{
+  int ret;
+  DIR *dp;
+  if (argc !=2){
+    printf("Usage:%s <name file>\n", argv[0]);
+    return -1;
+  }
+  dp = opendir(argv[1]);
+  if (dp !=NULL){
+    printf("opendir is ok\n");
+    return -1;
+  }
+  closedir(dp);
+  printf("opendir is closed\n");
+  return 0;
+}

Linux系统编程篇/02目录IO/readdir.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+
+int main(int argc, char *argv[])
+{ int ret;
+  DIR *dp;
+  struct dirent *dir;
+  if (argc != 2){
+    printf("Uage:%s <name file>\n",argv[0]);
+    return  -1;
+  };
+  dp = opendir(argv[1]);
+  if (dp == NULL) {
+    printf("opendir is error\n\n");
+    return -2;
+  }
+  printf("opendir is ok\n");
+  while(1)
+  {
+    dir = readdir(dp);
+    if (dir!=NULL) {
+      printf("file name is %s\n",dir->d_name);
+    }
+    else 
+    break;
+  }
+  closedir(dp);
+  return 0;
+}

Linux系统编程篇/03库的制作与使用/动态库制作/mylib.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+void mylib(void);
+void mylib(void)
+{
+  printf("This is mylib\n");
+}

Linux系统编程篇/03库的制作与使用/动态库制作/test.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+void mylib(void);
+int main(void){
+  mylib();
+  return 0;
+}

Linux系统编程篇/03库的制作与使用/静态库制作/mylib.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+void mylib(void);
+void mylib(void)
+{
+  printf("This is mylib\n");
+}

Linux系统编程篇/03库的制作与使用/静态库制作/test.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+void mylib(void);
+int main(void){
+  mylib();
+  return 0;
+}

Linux系统编程篇/04进程基础/getpid.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <unistd.h>
+
+
+int main(void)
+{
+  pid_t pid;
+  pid = fork();
+  if (pid < 0)
+  {
+    printf("fork is error\n");
+    return -1;
+  }
+  // 父进程
+  if (pid > 0) {
+    printf("This is parent, parent pid is %d\n",getppid());
+  }
+  // 子进程
+  if (pid == 0){
+    printf("This is child, child pid is %d\n",getpid());
+  }
+  return 0;
+}