Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

linux ³£ÓÃcº¯Êý


opendir£¨´ò¿ªÄ¿Â¼£©
Ïà¹Øº¯Êý
open£¬readdir£¬closedir£¬rewinddir£¬seekdir£¬telldir£¬scandir
±íÍ·Îļþ
#include<sys/types.h>
#include<dirent.h>
¶¨Ò庯Êý
DIR * opendir(const char * name);
º¯Êý˵Ã÷
opendir()ÓÃÀ´´ò¿ª²ÎÊýnameÖ¸¶¨µÄĿ¼£¬²¢·µ»ØDIR*ÐÎ̬µÄĿ¼Á÷£¬ºÍopen()ÀàËÆ£¬½ÓÏÂÀ´¶ÔĿ¼µÄ¶ÁÈ¡ºÍËÑË÷¶¼ÒªÊ¹Óô˷µ»ØÖµ¡£
·µ»ØÖµ
³É¹¦Ôò·µ»ØDIR* ÐÍ̬µÄĿ¼Á÷£¬´ò¿ªÊ§°ÜÔò·µ»ØNULL¡£
´íÎó´úÂë
EACCESS ȨÏÞ²»×ã
EMFILE ÒÑ´ïµ½½ø³Ì¿Éͬʱ´ò¿ªµÄÎļþÊýÉÏÏÞ¡£
ENFILE ÒѴﵽϵͳ¿Éͬʱ´ò¿ªµÄÎļþÊýÉÏÏÞ¡£
ENOTDIR ²ÎÊýname·ÇÕæÕýµÄĿ¼
ENOENT ²ÎÊýname Ö¸¶¨µÄĿ¼²»´æÔÚ£¬»òÊDzÎÊýname Ϊһ¿Õ×Ö·û´®¡£
ENOMEM ºËÐÄÄÚ´æ²»×ã¡£
readdir£¨¶ÁȡĿ¼£©
Ïà¹Øº¯Êý
open£¬opendir£¬closedir£¬rewinddir£¬seekdir£¬telldir£¬scandir
±íÍ·Îļþ
#include<sys/types.h>
#include<dirent.h>
¶¨Ò庯Êý
struct dirent * readdir(DIR * dir);
º¯Êý˵Ã÷
readdir()·µ»Ø²ÎÊýdirĿ¼Á÷µÄϸöĿ¼½øÈëµã¡£
½á¹¹dirent¶¨ÒåÈçÏÂ
struct dirent
{
ino_t d_ino;
ff_t d_off;
signed short int d_reclen;
unsigned char d_type;
har d_name[256;
};
d_ino ´ËĿ¼½øÈëµãµÄinode
d_off Ŀ¼Îļþ¿ªÍ·ÖÁ´ËĿ¼½øÈëµãµÄÎ»ÒÆ
d_reclen _nameµÄ³¤¶È£¬²»°üº¬NULL×Ö·û
d_type d_name ËùÖ¸µÄÎļþÀàÐÍ
d_name ÎļþÃû
·µ»ØÖµ
³É¹¦Ôò·µ»ØÏ¸öĿ¼½øÈëµã¡£ÓдíÎó·¢Éú»ò¶ÁÈ¡µ½Ä¿Â¼ÎļþβÔò·µ»ØNULL¡£
¸½¼Ó˵Ã÷
EBADF²ÎÊýdirΪÎÞЧµÄĿ¼Á÷¡£
·¶Àý
#include<sys/types.h>
#include<dirent.h>
#include<unistd.h>
main()
{
DIR * dir;
struct dirent * ptr;
int i;
dir =opendir(“/etc/rc.d”);
while((ptr = readdir(dir))!=NULL)
{
printf(“d_name: %s\n”,ptr->d_name);
}
closedir(dir);
}
Ö´ÐÐ
d_name:.
d_name:..
d_name:init.d
d_name:rc0.d
d_name:rc1.d
d_name:rc2.d
d_name:rc3.d
d_name:rc4.d
d_name:rc5.d
d_name:rc6.d
d_name:rc
d_name:rc.local
d_name:rc.sysinit
access£¨ÅжÏÊÇ·ñ¾ßÓдæÈ¡ÎļþµÄȨÏÞ£©
Ïà¹Øº¯Êý
stat£¬open£¬chmod£¬chown£¬setuid£¬setgid
±íÍ·Îļþ
#include<unistd.h>
¶¨Ò庯Êý
int access(const char * pathname,int mode);
º¯Êý˵Ã÷
access()»á¼ì²éÊÇ·ñ¿É


Ïà¹ØÎĵµ£º

Linux³£ÓÃÃüÁî±í

Óû§ÏµÍ³Ïà¹ØÃüÁî
 Óû§Çл»
 Óû§Çл»£º  su [Ñ¡Ïî] [ʹÓÃÕß]
 Óû§¹ÜÀí
  Ôö¼ÓÓû§Õ˺Å:  useradd [Ñ¡Ïî] Óû§Ãû
  ÉèÖÃÓû§Õ˺ÅÊôÐÔ£º usermod [Ñ¡Ïî] ÊôÐÔÖµ
  É¾³ý¶ÔÓ¦Óû§Õ˺ţº userdel [Ñ¡Ïî] Óû§Ãû
  Ôö¼Ó×éÕ˺ţº ......

LinuxÏÂMakefileµÄautomakeÉú³ÉÈ«¹¥ÂÔ

¡¡           ת×Ô http://tech.sina.com.cn/s/2004-10-19/1115443045.shtml
   ×÷ΪLinuxϵijÌÐò¿ª·¢ÈËÔ±£¬´ó¼ÒÒ»¶¨¶¼Óöµ½¹ýMakefile£¬ÓÃmakeÃüÁîÀ´±àÒë×Ô¼ºÐ´µÄ³ÌÐòȷʵÊǺܷ½±ã¡£Ò»°ãÇé¿öÏ£¬´ó¼Ò¶¼ÊÇÊÖ¹¤Ð´Ò»¸ö¼òµ¥Makefile£¬Èç¹ûÒªÏëд³öÒ»¸ö·ûºÏ×ÔÓÉÈ ......

linuxÐÞ¸Ässh¶Ë¿ÚºÍ½ûÖ¹rootÔ¶³ÌµÇ½ÉèÖÃ

linuxÐÞ¸Ässh¶Ë¿Ú22
vi /etc/ssh/ssh_config
vi /etc/ssh/sshd_config
È»ºóÐÞ¸ÄΪport 8888
ÒÔrootÉí·Ýservice sshd restart (redhat as3)
ʹÓÃputty,¶Ë¿Ú8888
LinuxÏÂSSHĬÈϵĶ˿ÚÊÇ22,ΪÁ˰²È«¿¼ÂÇ£¬ÏÖÐÞ¸ÄSSHµÄ¶Ë¿ÚΪ1433,Ð޸ķ½·¨ÈçÏ £º
/usr/sbin/sshd -p 1433
ΪÔöÇ¿°²È«
ÏÈÔö¼ÓÒ»¸öÆÕͨȨÏÞµÄÓû§£º ......

×Ô¶¯»¯²âÊÔÖÐPythonÓëC/C++µÄ»ìºÏʹÓÃ


±³¾°
ÏîÄ¿µÄ
×Ô¶¯»¯²âÊÔÖÐÒѾ­Ê¹ÓÃÁË»ùÓÚPython
½Å±¾µÄ¿ò¼Ü£¬×Ô¶¯»¯¹ý³ÌÖÐ×î¹Ø¼üµÄÎÊÌâ¾ÍÊÇÈçºÎʵÏÖ׮ģ¿é¡£ÔËÓÃ
Python
Ç¿´óµÄ¹¦ÄÜ£¬ÊµÏÖÈκÎ׮ģ¿é¶¼ÊÇ¿ÉÄܵ쬵«ÊÇÊÇ·ñ±ØÐëÍêȫʹÓÃ
Python
ʵÏÖÄ£¿éÂß¼­£¬³É±¾ÊÇÒ»¸ö¾ö¶¨ÐÔÒòËØ¡£ÔÚ׮ģ¿éÂß¼­¼òµ¥µÄÇé¿öÏ£¬Ê¹ÓÃ
Python
Ä£ÄâÄ£¿éÂß¼­²»µ«Ê¹×Ô¶¯»¯²âÊԵĽṹÇå ......

extern¼°extern ¡°C¡±Ó÷¨

externÊÇC/C++ÓïÑÔÖбíÃ÷º¯ÊýºÍÈ«¾Ö±äÁ¿×÷Ó÷¶Î§£¨¿É¼ûÐÔ£©µÄ¹Ø¼ü×Ö´´Òâ²úÆ·Íø .
Ëü¸æËß±àÒëÆ÷£¬ÆäÉùÃ÷µÄº¯ÊýºÍ±äÁ¿¿ÉÒÔÔÚ±¾Ä£¿é»òÆäËüÄ£¿éÖÐʹÓá£
1¡£¶ÔÓÚextern±äÁ¿À´Ëµ£¬½ö½öÊÇÒ»¸ö±äÁ¿µÄÉùÃ÷£¬Æä²¢²»ÊÇÔÚ¶¨Òå·ÖÅäÄÚ´æ¿Õ¼ä¡£Èç¹û¸Ã±äÁ¿¶¨Òå¶à´Î£¬»áÓÐÁ¬½Ó´íÎó
2¡£Í¨³££¬ÔÚÄ£¿éµÄÍ·ÎļþÖжԱ¾Ä£¿éÌṩ¸øÆäËüÄ£¿é ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ