diff --git a/Linux系统编程篇/02目录IO/mkdir b/Linux系统编程篇/02目录IO/mkdir
new file mode 100755
index 0000000..579ed1c
Binary files /dev/null and b/Linux系统编程篇/02目录IO/mkdir differ
diff --git a/Linux系统编程篇/02目录IO/mkdir.c b/Linux系统编程篇/02目录IO/mkdir.c
new file mode 100644
index 0000000..fd32af4
--- /dev/null
+++ b/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;
+}
diff --git a/Linux系统编程篇/02目录IO/openAndCloseDir b/Linux系统编程篇/02目录IO/openAndCloseDir
new file mode 100755
index 0000000..a377ca2
Binary files /dev/null and b/Linux系统编程篇/02目录IO/openAndCloseDir differ
diff --git a/Linux系统编程篇/02目录IO/openAndCloseDir.c b/Linux系统编程篇/02目录IO/openAndCloseDir.c
new file mode 100644
index 0000000..eb06e97
--- /dev/null
+++ b/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;
+}
diff --git a/Linux系统编程篇/02目录IO/readdir b/Linux系统编程篇/02目录IO/readdir
new file mode 100755
index 0000000..b85cc3c
Binary files /dev/null and b/Linux系统编程篇/02目录IO/readdir differ
diff --git a/Linux系统编程篇/02目录IO/readdir.c b/Linux系统编程篇/02目录IO/readdir.c
new file mode 100644
index 0000000..95517b8
--- /dev/null
+++ b/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;
+}
diff --git a/Linux系统编程篇/02目录IO/test/a.test b/Linux系统编程篇/02目录IO/test/a.test
new file mode 100644
index 0000000..e69de29
diff --git a/Linux系统编程篇/03库的制作与使用/动态库制作/a.out b/Linux系统编程篇/03库的制作与使用/动态库制作/a.out
new file mode 100755
index 0000000..8783cc9
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diff --git a/Linux系统编程篇/03库的制作与使用/动态库制作/libmylib.so b/Linux系统编程篇/03库的制作与使用/动态库制作/libmylib.so
new file mode 100755
index 0000000..f96629d
Binary files /dev/null and b/Linux系统编程篇/03库的制作与使用/动态库制作/libmylib.so differ
diff --git a/Linux系统编程篇/03库的制作与使用/动态库制作/mylib.c b/Linux系统编程篇/03库的制作与使用/动态库制作/mylib.c
new file mode 100644
index 0000000..229d60e
--- /dev/null
+++ b/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");
+}
diff --git a/Linux系统编程篇/03库的制作与使用/动态库制作/mylib.o b/Linux系统编程篇/03库的制作与使用/动态库制作/mylib.o
new file mode 100644
index 0000000..37674c4
Binary files /dev/null and b/Linux系统编程篇/03库的制作与使用/动态库制作/mylib.o differ
diff --git a/Linux系统编程篇/03库的制作与使用/动态库制作/test.c b/Linux系统编程篇/03库的制作与使用/动态库制作/test.c
new file mode 100644
index 0000000..1473336
--- /dev/null
+++ b/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;
+}
diff --git a/Linux系统编程篇/03库的制作与使用/静态库制作/a.out b/Linux系统编程篇/03库的制作与使用/静态库制作/a.out
new file mode 100755
index 0000000..51d9d00
Binary files /dev/null and b/Linux系统编程篇/03库的制作与使用/静态库制作/a.out differ
diff --git a/Linux系统编程篇/03库的制作与使用/静态库制作/libmylib.a b/Linux系统编程篇/03库的制作与使用/静态库制作/libmylib.a
new file mode 100644
index 0000000..428a16c
Binary files /dev/null and b/Linux系统编程篇/03库的制作与使用/静态库制作/libmylib.a differ
diff --git a/Linux系统编程篇/03库的制作与使用/静态库制作/mylib.c b/Linux系统编程篇/03库的制作与使用/静态库制作/mylib.c
new file mode 100644
index 0000000..229d60e
--- /dev/null
+++ b/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");
+}
diff --git a/Linux系统编程篇/03库的制作与使用/静态库制作/mylib.o b/Linux系统编程篇/03库的制作与使用/静态库制作/mylib.o
new file mode 100644
index 0000000..37674c4
Binary files /dev/null and b/Linux系统编程篇/03库的制作与使用/静态库制作/mylib.o differ
diff --git a/Linux系统编程篇/03库的制作与使用/静态库制作/test.c b/Linux系统编程篇/03库的制作与使用/静态库制作/test.c
new file mode 100644
index 0000000..1473336
--- /dev/null
+++ b/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;
+}
diff --git a/Linux系统编程篇/04进程基础/a.out b/Linux系统编程篇/04进程基础/a.out
new file mode 100755
index 0000000..bb4ce04
Binary files /dev/null and b/Linux系统编程篇/04进程基础/a.out differ
diff --git a/Linux系统编程篇/04进程基础/getpid.c b/Linux系统编程篇/04进程基础/getpid.c
new file mode 100644
index 0000000..44e2828
--- /dev/null
+++ b/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;
+}