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[bruce@server1 ~]$ vim hello_world.c
/*This is my first C program*/
#include <stdio.h>
int main()
{
        printf("Hello World!\n");
        return 0;
}
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[bruce@server1 ~]$ gcc hello_world.c
[bruce@server1 ~]$
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[bruce@server1 ~]$ ls
a.out    hello_world.c  rpmbuild      RPM-GPG-KEY-CentOS-3
Desktop  programs       rpmbuild.txt
[bruce@server1 ~]$
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[bruce@server1 ~]$ ./a.out
Hello World!
[bruce@server1 ~]$
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linux 0.11 ÄÚºËѧϰ bitmap.c


/*
 *  linux/fs/bitmap.c
 *
 *  (C) 1991  Linus Torvalds
 */
/* bitmap.c contains the code that handles the inode and block bitmaps */
#include <string.h>
#include <linux/sched.h>
#include <linux/kernel.h> // һЩÄں˳£Óú¯ÊýµÄÔ­Ðζ¨Òå
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µÚ¶þÖÖÊÇͨ¹ý¼ÓÈëÄÚºËÖ§³ÖÔÚFile systems  --->  DOS/FAT/NT Filesystems  --->ÖÐÓÐÁ½ÏîÐÞ¸ÄΪ£ ......

JavaÅжÏOSÊÇlinux»¹ÊÇwindows

public class Test {
public static void main(String aa[]) {
if (System.getProperty("os.name").equals("Linux")) {
System.out.println("linux");
} else if (System.getProperty("os.name").equals("Windows XP")) {
System.out.println("win ......

Linuxϳ£ÓÃÍøÂçÎļþ

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2). /etc/sysconfig/network-scrips/ifcfg-eth0
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3). /etc/resolv.conf
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