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linux ʹÓÃxinetd

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LinuxÏÂsyslogÈÕÖ¾º¯ÊýʹÓá¡£ºhttp://blog.csdn.net/telehiker/archive/2007/10/18/1830575.aspx
xinetd ʹÓÃÖ¸ÄÏÖÐÎÄ£ºhttp://www.dbanotes.net/OpenSource/Using_xinetd.html
xinetd ¹ÙÍø£º¡¡http://www.xinetd.org
xinetd ¸ú·þÎñͨÐÅʹÓá¡stdin/stderr ÊäÈëºÍÊä³ö£º
ʹÓá¡£ã±àдµÄÒ»¸öÀý×Ó£ºhelloword.c
#include <stdio.h>
#include <syslog.h>
#define MAX_INPUT 256
int main(void)
{
char input[MAX_INPUT+1] ;
if ( fgets(input, MAX_INPUT, stdin) != NULL ) {
//printf ("%s",input);
syslog(LOG_INFO,"hel - %s\n",input);
fprintf (stdout,input);
}
return 0;
}
1.±àÒëºó·ÅÔÚ/usr/bin/helloword
 2.±àдÅäÖÃÎļþ£ºnano -w /etc/xinetd.d/helloword
service helloword
{
disable = no
wait = no
socket_type = stream
flags = IPv6
port = 3000
user = root
group = root
server = /usr/bin/helloword
#server_args =
}

3.ÅäÖ÷þÎñÆ÷ÉÏʹÓõĶ˿ڣº
  nano -w /etc/services Ôö¼Ó2ÐУº
  helloc          3000/tcp
  helloc          3000/udp
4.ÖØÐÂÆô¶¯xinetd £¬ÊÇ·þÎñÉúЧ¡£
5.ÅäÖÃÈÕÖ¾£ºnano -w /etc/metalog :
  Xinetd :
  program_regex = "^xinetd"
  program_regex = "^helloword"
  logdir   = "/var/log/xinetd"
  break    = 1
 
6.²âÊÔ£º
  tg flashpolicyd_v0.6 # perl -e 'printf "hello\n",0' | nc 127.0.0.1 3000
  hello
×÷ÕߣºJose Nazario
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³ö´¦£ºhttp://www.dbanotes.net
°æ±¾£º@2001/11/27 Version 0.01 @2003/05/23 Version 1.00
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xinetdÈ¡´úÁËinetd£¬²¢ÇÒÌṩÁË·ÃÎÊ¿ØÖÆ¡¢¼ÓÇ¿µÄÈÕÖ¾ºÍ×ÊÔ´¹ÜÀí¹¦ÄÜ¡£xinetdÒѾ­³ÉΪRed Hat 7 ºÍ Mandrake 7.2µÄInternet±ê×¼³¬¼¶ÊØ»¤½ø³Ì¡£ÕâÆªÎÄÕ½«Òýµ¼ÄãÈçºÎÓ¦ÓÃһЩËüµÄÌØÐÔ£¬ÕâÐ©ÌØÐÔ»ùÓÚxinetd 2.1.8.8 pre3°æ±¾¡£
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Linux fork()º¯Êýѧϰ

    ÔÚ UNIX ϵͳÖУ¬Óû§´´½¨Ò»¸öнø³ÌµÄΨһ·½·¨¾ÍÊǵ÷ÓÃϵͳµ÷Óà fork¡£µ÷ Óà fork µÄ½ø³Ì³ÆÎª¸¸½ø³Ì£¬¶øÐ´´½¨µÄ½ø³Ì½Ð×ö×Ó½ø³Ì¡£ÏµÍ³µ÷ÓõÄÓï·¨¸ñʽ£º
    pid = fork();
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Linux FTP·þÎñÅäÖÃ

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Ê×ÏÈÒª°²×°linuxϵÄvsftpÈí¼þ°ü¡£
  rpm -qa|gerp vsftpd      //²éÕÒvsftpdÓÐûÓа²×°
[root@RAC01 ~]# rpm -qa|grep vsftpd
vsftpd-2.0.1-5.EL4.7
[root@RAC01 ~]#
Èç¹ûûÓа²×°¾Í vsftpd-2.0.1-5.i386.rpm
ÔÚli ......

linux»ù±¾ÃüÁî

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1. man ¶ÔÄãÊìϤ»ò²»ÊìϤµÄÃüÁîÌṩ°ïÖú½âÊÍ
eg:man ls ¾Í¿ÉÒԲ鿴lsÏà¹ØµÄÓ÷¨
×¢£º°´q¼ü»òÕßctrl+cÍ˳ö£¬ÔÚlinuxÏ¿ÉÒÔʹÓÃctrl+cÖÕÖ¹µ±Ç°³ÌÐòÔËÐС£
2. ls ²é¿´Ä¿Â¼»òÕßÎļþµÄÊô*£¬ÁоٳöÈÎһĿ¼ÏÂÃæµÄÎļþ
eg: ls /usr/man
ls -l
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          2¡¢¶þ½øÖƵÄÍøÂç±à³ÌÖУ¬´«ËÍÊý¾Ý£¬×îºÃÒÔunsigned char, unsigned short, unsigned int
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Mr. ProcessµÄÒ»Éú£­LinuxÄں˵ÄÉç»áÊÓ½Ç (1)µ÷¶È

Written by manio (http://blog.csdn.net/manio)
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