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Linux ϵĴíÎó error.h

  errno
ÊǸöint±äÁ¿£¬·µ»Ø´íÎó
ÓдíÎóʱʹÓ÷½·¨
fprintf(fp, "%s", strerror(errno))
perrorÓ÷¨
#include <stdio.h>
#include <stdlib.h>
#include<errno.h>
int main(void)
{
FILE *fp;
if((fp=fopen("aaa.txt","r+"))==NULL)
{
puts("²»ÄܽøÈëÎļþ");
perror("Ô­Òò");
printf("errno=%d\n",errno);
exit(1);
}
system("PAUSE");
return 0;
}
fopen·µ»ØNULLÒòΪûÓÐÎļþ
#define    EPERM        1    /* Operation not permitted */
#define    ENOENT        2    /* No such file or directory */
#define    ESRCH        3    /* No such process */
#define    EINTR        4    /* Interrupted system call */
#define    EIO        5    /* I/O error */
#define    ENXIO        6    /* No such device or address */
#define    E2BIG        7    /* Argument list too long */
#define    ENOEXEC        8    /* Exec format error */
#define    EBADF        9    /* Bad file number */
#define    ECHILD        10    /* No child processes */
#define    EAGAIN        11    /* Try again */
#define    ENOMEM        12    /* Out of memory */
#define    EACCES  &


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  useradd nagios
   passwd nagios
2.°²×°nagios²å¼þ
  tar xvzf nagios-plugins-*.tar.gz
  ./configure
   make && make install
   chown nagios.nagios ......

LINUXÅäÖÃNFSºÍTFTP

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£Ûת£Ý¹¹Ôì c++ IDE(linux)

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(ÐÞ¸Ä~/.vimrc,ûÓд´½¨Ö®)
set encoding=utf-8
syntax enable
syntax on
filetype on
set tabstop=4
set softtabstop=4
set shiftwidth=4
set cindent
set autoindent
filetype plugin indent on
1.Alternate (http://www.vim ......

linux sock_rawԭʼÌ×½Ó×Ö±à³Ì (ת£©


sock_rawԭʼÌ×½Ó×Ö±à³Ì¿ÉÒÔ½ÓÊÕµ½±¾»úÍø¿¨ÉϵÄÊý¾ÝÖ¡»òÕßÊý¾Ý°ü,¶ÔÓë¼àÌýÍøÂçµÄÁ÷Á¿ºÍ·ÖÎöÊǺÜÓÐ×÷ÓõÄ.Ò»¹²¿ÉÒÔÓÐ3ÖÖ·½Ê½´´½¨ÕâÖÖsocket
 
1.socket(AF_INET, SOCK_RAW, IPPROTO_TCP|IPPROTO_UDP|IPPROTO_ICMP)·¢ËͽÓÊÕipÊý¾Ý°ü
2.socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IP|ETH_P_ARP|ETH_P_ALL))·¢ËͽÓÊÕÒÔ ......

LinuxÏÂApache°²×°/Ôö¼Ómod_rewriteÄ£¿é

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ÖÐÕÒµ½¡£Èç¹ûÄãµÄapacheÒѾ­°²×°ºÃÁË£¬ÏÖÔÚÖ»Ïë±àÒë³ömod_rewrite.soÄ£¿é£¬ÔÚapacheÖнøÐмÓÔØ£¬ÏÂÃæÎÒÃǾͽéÉÜÕâ¸ö·½·¨¡£
¡¡¡¡ÒÔFedora² ......
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