linux api±Ê¼Ç£¨1£©£ºÅжÏÎļþÊÇ·ñ´æÔÚ
Èç¹ûÔÚlinux C\C++»·¾³ÏÂÅжÏij¸öÎļþÊÇ·ñ´æÔÚ£¬¿ÉÒÔʹÓÃaccessº¯Êý£º
#include <unistd.h>
#include <stdio.h>
int main()
{
const char* file1 = "access.cpp";
const char* file2 = "access1.cpp";
printf("%s:%d\n", file1, access(file1, F_OK));
printf("%s:%d\n", file2, access(file2, F_OK));
return 0;
}
¼ÙÉèÎļþaccess.cppÇÒaccess1.cpp²»´æÔÚ£¬ÄÇô½á¹ûΪ£º
access.cpp:0
access1.cpp:-1
Ïà¹ØÎĵµ£º
¹¦ÄÜ˵Ã÷£º²éÕÒÎļþ¡£
Óï¡¡¡¡·¨£ºwhich [Îļþ...]
²¹³ä˵Ã÷£ºwhichÖ¸Áî»áÔÚ»·¾³±äÁ¿$PATHÉèÖõÄĿ¼Àï²éÕÒ·ûºÏÌõ¼þµÄÎļþ¡£
²Î¡¡¡¡Êý£º
¡¡-n<ÎļþÃû³¤¶È> ¡¡Ö¸¶¨ÎļþÃû³¤¶È£¬Ö¸¶¨µÄ³¤¶È±ØÐë´óÓÚ»òµÈÓÚËùÓÐÎļþÖÐ×µÄÎļþÃû¡£
¡¡-p<ÎļþÃû³¤¶È> ¡¡Óë-n²ÎÊýÏàͬ£¬µ«´Ë´¦µÄ<ÎļþÃû³¤¶È>°üÀ¨ÁËÎļþµÄ ......
linuxϵÄÖ÷ÒªÎļþ
/boot/grub/grub.conf GRUB configuration file
/boot/module-info-* Module information for the Linux kernel
/boot/System.map-* Map of the Linux kernel
/boot/vmlinuz-* Linux kernel
/etc/aliases Mail aliases
/etc/a ......
yum update ¸üÐÂϵͳ֮ºó£¬Äں˰汾³öÏÖÁËÁ½ÖÖ£¬Ò»ÖÖÊÇPAE£¬ÁíÍâÒ»ÖÖ²¢Ã»ÓÐPAE¡£
ºÎνPAEÄØ£¿È«³Æ£ºPhysical Address Extension
Æäʵ¾ÍÊÇʹ32λϵͳ֧³Ö³¬¹ý4GÄڴ棬×î´ó¿É´ï64GÄÚ´æ¡£
¶ÔÓÚLinuxÀ´Ëµ£¬Äں˴Ó2.6°æ±¾¿ªÊ¼È«ÃæÖ§³ÖPAE[3]
£¬ÕâʹµÃÔÚ32λµÄ»úÆ÷ÉÏ¿ÉÒÔ·ÃÎÊ64GBµÄÄÚ´æ¡£ÆôÓÃÁËPAEµÄLinuxÄں˻¹ÐèҪͬÑùÖ§³ÖP ......
<!--
@page { margin: 2cm }
P { margin-bottom: 0.21cm }
-->
½üÆÚÒÔÀ´£¬¾²¹ÛÊÀ½ç
Linux
Òµ½çµÄ¸÷ÖÖ¶¯Ïò£¬ÁîÈËÐÄÈç³±Ó¿£¬²»µÃ°²Äþ¡£´Ë»°Ôõô½²£¿
Ê®¼¸ÄêÀ´£¬
Linux
ÒѾÐγÉÒ»¹ÉÊÀ½çÐԵķ¢Õ¹³±Á÷£¬ÈκÎÊÆÁ¦Ò²×èµ²²»ÁË¡£Ðí¶àÊÀ½ç¼¶µÄ´ó¹ ......
#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
pthread_mutex_t wqy_mutex_pause = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t wqy_cond_pause = PTHREAD_COND_INITIALIZER;
bool wqy_pthread_pause = false;
void wqy_pthread_suspend(void)
{
if ......