Linuxϰ²×°JAVA JDK
1. ´ÓsunÖ÷Ò³ÏÂÔØJDK for Linux°æ±¾£¬ÎÒµÄÊÇjdk-6u14-linux-i586.bin¡£
2. ¸ÄΪ¿É²Ù×÷Îļþ£¬chmod +x jdk-6u14-linux-i586.bin
3. °²×° ÔÚµ±Ç°Â·¾¶£¬./jdk-6u14-linux-i586.bin;һ·ȷ¶¨£¬×°ºÃÖ®ºóÔÚͬһĿ¼Ï»áÉú³ÉÒ»¸öÎļþ¼Ð£¬jdk1.6.0_14£¬Àï±ßÊÇһЩlibµÈÎļþ£¬Í¬windowsÏÂÉú³ÉµÄ°²×°Îļþ¼ÐÒ»Ñù¡£
4.ÉèÖû·¾³±äÁ¿
Ò»ÖÖ·½·¨ÊÇ£º
ÐÞ¸Ä /etc/profile
ÔÚĩβÔö¼Ó
JAVA_HOME=root/jdk1.6.0_14 //ÉèΪ°²×°Îļþ¼Ð£¨jdk1.6.0_14£©µÄ¾ø¶Ô·¾¶
JRE_HOME=$JAVA_HOME/jre
CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CALSSPAHT //.Ϊµ±Ç°Ä¿Â¼£¬Ã°ºÅ±íʾ·Ö¸ô²»Í¬Ä¿Â¼
PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
export JAVA_HOME JRE_HOME CLASSPATH PATH
ÏÂÃæÕâÖÖÉèÖÃÒ²ÐУ¬¸úÎÒµÄwindowsµÄÉèÖÃÒ»Ñù¡£
JAVA_HOME=root/jdk1.6.0_14 //ÉèΪ°²×°Îļþ¼Ð£¨jdk1.6.0_14£©µÄ¾ø¶Ô·¾¶
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$CALSSPAHT //.Ϊµ±Ç°Ä¿Â¼£¬Ã°ºÅ±íʾ·Ö¸ô²»Í¬Ä¿Â¼
PATH=$JAVA_HOME/bin:bin:$PATH
export JAVA_HOME CLASSPATH PATH
ÉèÖúÃÖ®ºó¾Í¿ÉÒÔÓà javaµÈÃüÁîÁË¡£
Ïà¹ØÎĵµ£º
ListµÄÓ÷¨
List°üÀ¨List½Ó¿ÚÒÔ¼°List½Ó¿ÚµÄËùÓÐʵÏÖÀà¡£ÒòΪList½Ó¿ÚʵÏÖÁËCollection½Ó¿Ú£¬ËùÒÔList½Ó¿ÚÓµÓÐCollection½Ó¿ÚÌṩµÄËùÓг£Ó÷½·¨£¬ÓÖÒòΪListÊÇÁбíÀàÐÍ£¬ËùÒÔList½Ó¿Ú»¹ÌṩÁËһЩÊʺÏÓÚ×ÔÉíµÄ³£Ó÷½·¨£¬Èç±í1Ëùʾ¡£
±í1 List½Ó¿Ú¶¨ÒåµÄ³£Ó÷½·¨¼°¹¦ÄÜ
´Ó±í1¿ÉÒÔ¿´³ö£¬List½Ó¿ÚÌṩµÄÊʺÏÓÚ×ÔÉíµÄ ......
overrideÊÇ·½·¨µÄÖØÐ´£¬Í¨³£·¢ÉúÔÚ×ÓÀàÓ븸ÀàÖ®ÖУ¬Ö¸µÄÊÇ×ÓÀàÖж¨ÒåÁËÒ»¸öÓ븸Àà·µ»ØÖµÀàÐÍ£¬²ÎÊýÀàÐÍÍêÈ«ÏàͬµÄ·½·¨
overloadÊÇ·½·¨µÄÖØÔØ£¬Í¨³£ÔÚͬһ¸öÀàÖУ¬¶¨ÒåÁËÒ»¶Ñ·½·¨ÃûÏàͬ£¬µ«·µ»ØÖµ¿ÉÄܲ»Í¬£¬²ÎÊýÒ²¿ÉÄܲ»Í¬µÄ·½·¨
override£¨ÖØÐ´£©
1¡¢·½·¨Ãû¡¢²ÎÊý¡¢·µ»ØÖµÏàͬ¡£
2¡¢×ÓÀà·½·¨²»ÄÜËõС¸¸Àà·½·¨µÄ·ÃÎÊÈ¨Ï ......
linux c ¶ÁÈ¡ÎļþÐÐÊý²ÎÕÕwc ϵͳÃüÁî±àдµÄº¯ÊýÈçÏ£º
#include <fcntl.h>
#include <stdlib.h>
#define MAXBSIZE 65536
u_long file_wc(char *file)
{
register u_char *p;
register short gotsp;
register int ch, len;
register u_long linect, charct;
int fd;
u_char buf[MAXBSIZE];
......
ÔÚ¹²ÏíÄڴ棨ÉÏ£©ÖУ¬Ö÷ÒªÎ§ÈÆ×Åϵͳµ÷ÓÃmmap()½øÐÐÌÖÂ۵쬱¾²¿·Ö½«ÌÖÂÛϵͳV¹²ÏíÄڴ棬²¢Í¨¹ýʵÑé½á¹û¶Ô±ÈÀ´²ûÊöÁ½ÕßµÄÒìͬ¡£ÏµÍ³V¹²ÏíÄÚ´æÖ¸µÄÊǰÑËùÓй²ÏíÊý¾Ý·ÅÔÚ¹²ÏíÄÚ´æÇøÓò£¨IPC shared memory region£©£¬ÈκÎÏëÒª·ÃÎʸÃÊý¾ÝµÄ½ø³Ì¶¼±ØÐëÔÚ±¾½ø³ÌµÄµØÖ·¿Õ¼äÐÂÔöÒ»¿éÄÚ´æÇøÓò£¬ÓÃÀ´Ó³Éä´æ·Å¹²ÏíÊý¾ÝµÄÎïÀíÄÚ´æÒ³Ãæ ......