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

linux½ø³Ì¿ØÖÆ£­execϵÁÐ

˵ÊÇexecϵͳµ÷Óã¬Êµ¼ÊÉÏÔÚLinuxÖУ¬²¢²»´æÔÚÒ»¸öexec()µÄº¯ÊýÐÎʽ£¬execÖ¸µÄÊÇÒ»×麯Êý£¬Ò»¹²ÓÐ6¸ö£¬·Ö±ðÊÇ£º




#include <unistd.h>
int execl(const char *path, const char *arg, ...);
int execlp(const char *file, const char *arg, ...);
int execle(const char *path, const char *arg, ..., char *const envp[]);
int execv(const char *path, char *const argv[]);
int execvp(const char *file, char *const argv[]);
int execve(const char *path, char *const argv[], char *const envp[]);
ÆäÖÐÖ»ÓÐexecveÊÇÕæÕýÒâÒåÉϵÄϵͳµ÷Óã¬ÆäËü¶¼ÊÇÔÚ´Ë»ù´¡ÉϾ­¹ý°ü×°µÄ¿âº¯Êý¡£
execº¯Êý×åµÄ×÷ÓÃÊǸù¾ÝÖ¸¶¨µÄÎļþÃûÕÒµ½¿ÉÖ´ÐÐÎļþ£¬²¢ÓÃËüÀ´È¡´úµ÷Óýø³ÌµÄÄÚÈÝ£¬»»¾ä»°Ëµ£¬¾ÍÊÇÔÚµ÷Óýø³ÌÄÚ²¿Ö´ÐÐÒ»¸ö¿ÉÖ´ÐÐÎļþ¡£ÕâÀïµÄ¿ÉÖ´ÐÐÎļþ¼È¿ÉÒÔÊǶþ½øÖÆÎļþ£¬Ò²¿ÉÒÔÊÇÈκÎLinuxÏ¿ÉÖ´ÐеĽű¾Îļþ¡£
Óë
Ò»°ãÇé¿ö²»Í¬£¬execº¯Êý×åµÄº¯ÊýÖ´Ðгɹ¦ºó²»»á·µ»Ø£¬ÒòΪµ÷Óýø³ÌµÄʵÌ壬°üÀ¨´úÂë¶Î£¬Êý¾Ý¶ÎºÍ¶ÑÕ»µÈ¶¼ÒѾ­±»ÐµÄÄÚÈÝÈ¡´ú£¬Ö»ÁôϽø³ÌIDµÈһЩ±í
ÃæÉϵÄÐÅÏ¢ÈÔ±£³ÖÔ­Ñù£¬ÆÄÓÐЩÉñËÆ"ÈýÊ®Áù¼Æ"ÖеÄ"½ð²õÍÑ¿Ç"¡£¿´ÉÏÈ¥»¹ÊǾɵÄÇû¿Ç£¬È´ÒѾ­×¢ÈëÁËеÄÁé»ê¡£Ö»Óе÷ÓÃʧ°ÜÁË£¬ËüÃDzŻ᷵»ØÒ»¸ö-1£¬´Ó
Ô­³ÌÐòµÄµ÷Óõã½Ó×ÅÍùÏÂÖ´ÐС£
ÏÖÔÚÎÒÃÇÓ¦¸ÃÃ÷°×ÁË£¬LinuxÏÂÊÇÈçºÎÖ´ÐÐгÌÐòµÄ£¬Ã¿µ±Óнø³ÌÈÏΪ×Ô¼º²»ÄÜΪϵͳ
ºÍÓµ»¤×ö³öÈκι±Ï×ÁË£¬Ëû¾Í¿ÉÒÔ·¢»Ó×îºóÒ»µãÓàÈÈ£¬µ÷ÓÃÈκÎÒ»¸öexec£¬ÈÃ×Ô¼ºÒÔеÄÃæÃ²ÖØÉú£»»òÕߣ¬¸üÆÕ±éµÄÇé¿öÊÇ£¬Èç¹ûÒ»¸ö½ø³ÌÏëÖ´ÐÐÁíÒ»¸ö³ÌÐò£¬
Ëü¾Í¿ÉÒÔfork³öÒ»¸öнø³Ì£¬È»ºóµ÷ÓÃÈκÎÒ»¸öexec£¬ÕâÑù¿´ÆðÀ´¾ÍºÃÏñͨ¹ýÖ´ÐÐÓ¦ÓóÌÐò¶ø²úÉúÁËÒ»¸öнø³ÌÒ»Ñù¡£
ÊÂ
ʵÉϵڶþÖÖÇé¿ö±»Ó¦ÓõÃÈç´ËÆÕ±é£¬ÒÔÖÁÓÚLinuxרÃÅΪÆä×÷ÁËÓÅ»¯£¬ÎÒÃÇÒѾ­ÖªµÀ£¬fork»á½«µ÷Óýø³ÌµÄËùÓÐÄÚÈÝÔ­·â²»¶¯µÄ¿½±´µ½Ð²úÉúµÄ×Ó½ø³ÌÖÐ
È¥£¬ÕâЩ¿½±´µÄ¶¯×÷ºÜÏûºÄʱ¼ä£¬¶øÈç¹ûforkÍêÖ®ºóÎÒÃÇÂíÉϾ͵÷ÓÃexec£¬ÕâЩÐÁÐÁ¿à¿à¿½±´À´µÄ¶«Î÷ÓֻᱻÁ¢¿ÌĨµô£¬Õâ¿´ÆðÀ´·Ç³£²»»®Ë㣬ÓÚÊÇÈËÃÇÉè
¼ÆÁËÒ»ÖÖ"дʱ¿½±´£¨copy-on-write£©"¼¼Êõ£¬Ê¹µÃfork½áÊøºó²¢²»Á¢¿Ì¸´ÖƸ¸½ø³ÌµÄÄÚÈÝ£¬¶øÊǵ½ÁËÕæÕýʵÓõÄʱºò²Å¸´ÖÆ£¬ÕâÑùÈç¹ûÏÂÒ»Ìõ
Óï¾äÊÇexec£¬Ëü¾Í²»»á°×°××÷ÎÞÓù¦ÁË£¬Ò²¾ÍÌá¸ßÁËЧÂÊ¡£
/* exec.c */
#include <unistd.h>
main()
{
char *envp[]={"PATH=/tmp"


Ïà¹ØÎĵµ£º

ʵսLinux Bluetooth±à³Ì£¨ËÄ£© L2CAP²ã±à³Ì

£¨L2CAPЭÒé¼ò½é£¬L2CAPÔÚBlueZÖеÄʵÏÖÒÔ¼°L2CAP±à³Ì½Ó¿Ú£©
Ò»£ºL2CAPЭÒé¼ò½é£º
Logical Link Control and Adaptation Protocol(L2CAP)
Âß¼­Á¬½Ó¿ØÖƺÍÊÊÅäЭÒé (L2CAP) ΪÉϲãЭÒéÌá¹©ÃæÏòÁ¬½ÓºÍÎÞÁ¬½ÓµÄÊý¾Ý·þÎñ£¬²¢Ìṩ¶àЭÒ鹦ÄܺͷָîÖØ×é²Ù×÷¡£L2CAP ³äÐíÉϲãЭÒéºÍÓ¦ÓÃÈí¼þ´«ÊäºÍ½ÓÊÕ×î´ó³¤¶ÈΪ 64K µÄ L2CAP Ê ......

LinuxÉ豸ģÐÍÖ®input×ÓϵͳÏê½â

Ò»£ºÇ°ÑÔ
×î½üÔÚÑо¿androidµÄsensor driver£¬Ö÷ÒªÊÇE-compass£¬ÆäÖÐÓõ½ÁËLinux input×Óϵͳ.ÔÚÍøÉÏÒ²¿´Á˺ܶàÕâ·½ÃæµÄ×ÊÁÏ£¬¸Ð¾õ»¹ÊÇÕâÆª·ÖÎöµÄ±È½ÏϸÖÂ͸³¹£¬Òò´Ë×ªÔØÒ»ÏÂÒÔ±ã×Ô¼ºÑ§Ï°£¬Í¬Ê±ºÍ´ó¼Ò·ÖÏí£¡
£¨ÕâÆª²©¿ÍÖ÷ÒªÊÇÒÔ¼üÅÌÇý¶¯ÎªÀýµÄ£¬²»¹ý½²½âµÄÊÇLinux Input Subsystem£¬¿ÉÒÔ×ÐϸµÄÑо¿Ò»Ï£¡£©
¼üÅÌÇý¶¯½«¼ì ......

Linuxѧϰ±Ê¼ÇÁãÁãÈý

´æ´¢¹ÜÀí
MMUÓëÄÚºËÄÚ´æ¹ÜÀíµÄ¹ØÏµ
´ÓÏßÐÔµØÖ·µ½ÎïÀíµØÖ·µÄÓ³É䣬ͨ¹ýҳĿ¼±íºÍÒ³±íÀ´ÊµÏֵġ£
ÄÚºËΪ´æ´¢¹ÜÀíά»¤ÁËÒ»Ì׸´ÔÓµÄÊý¾Ý½á¹¹£¬Ò³Ä¿Â¼±íºÍÒ³±íÊÇÖ÷ÒªµÄ½á¹¹Ö®Ò»¡£ÕâЩ±íÒ²ÊÇ´æ´¢ÔÚÎïÀíÄÚ´æÒ³ÃæÖеģ¬Òò´Ë£¬Ò²ÊÇÒÔ4KΪµ¥Î»¡£
±íÖеÄÿ¸ö±íÏî¶¼¼Ç¼ÁËÒ»¸ö32λµÄµØÖ·£¬Îª4¸ö×Ö½Ú£¬Òò´Ë£¬Ò»¸ö±íÖÐ×î¶à¿ÉÒÔÓÐ1KÏî ......

ÔÚLinuxÏÂÕýÈ·°²×° VMWARE TOOLS

ÕâÆªÎÄÕ»ù±¾ÉϽ²Ã÷°×ÁËÈçºÎ°²×°LinuxÏ嵀 vmtools£¬²»¹ýÎÒºÍËûµÄ°²×°²»Í¬£¬ËùÒÔ½ö¹©²Î¿¼£¬¾ßÌåʵÏÖÒª¿´ÊÇÄÇÖÖLinuxϵͳ£¬»òÕßÊǾßÌåµÄÄǸö°æ±¾£¬ÎÒÓÃredhatºÍubuntu¡£»ù±¾²Ù×÷¾ÍÊÇ£º
¹ÒÔØ¹âÇý¡¢¸´ÖÆÎļþµ½tmp¡¢½âѹ¡¢°²×°¡¢Ò»Â·Ä¬ÈÏ¡¢°²×°Íê³É¡£
1¡¢ÒÔROOTÉí·Ý½øÈëLINUX
2¡¢°´Ï CTRL+ALT×éºÏ¼ü£¬½øÈëÖ÷²Ù×÷ϵͳ£ ......

linux ³ÌÐòÄÚ²¿ ²é¿´¿ÉÖ´ÐгÌÐò·¾¶

linux shell pwd ÏÔʾµ±Ç°Â·¾¶
¼ÙÈôÓÐtest.cpp
g++ test.cpp -o test
./test
ÏëÔÚtestÖÐÕÒµ½µ±Ç°Ö´ÐгÌÐòËùÔڵķ¾¶
¿ÉÒÔÔÙtest.cppÖÐʹÓÃreadlinkº¯Êý
¾ßÌå¼ûÈçÏÂʵÀý£º
#include<iostream>
#include<unistd.h>
#include<dirent.h>
#include<string.h>
#include<string>
using ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ