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#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;
}
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access.cpp:0
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Linux µÄ initrd ¼¼ÊõÊÇÒ»¸ö·Ç³£ÆÕ±éʹÓõĻúÖÆ£¬linux2.6 ÄÚºËµÄ initrd µÄÎļþ¸ñʽÓÉÔ­À´µÄÎļþϵͳ¾µÏñÎļþת±ä³ÉÁË cpio ¸ñʽ£¬±ä»¯²»½ö·´Ó³ÔÚÎļþ¸ñʽÉÏ£¬ linux Äں˶ÔÕâÁ½ÖÖ¸ñʽµÄ initrd µÄ´¦ÀíÓÐ׎ØÈ»µÄ²»Í¬¡£

initrd µÄÓ¢Îĺ¬ÒåÊÇ boot loader ......

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2¡¢£¿ Æ¥ÅäÎļþÃûÖеÄÈκε¥×Ö·û´®
3¡¢£Û….£ ......

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configure: error: Unable to find libgd.(a|so)
Èç¹ûʹÓõÄÊÇubuntu»òdebian¾ÍºÜ¼òµ¥ÁË£¬Ö±½Ósudo apt-get install apache2 libapache2-mod-php5 php5 php5-gd ¾Í»ù±¾Éϸ㶨£¬µ«ÊÇÓÃÔ´´úÂë°²×°»¹ÊǺÜÂé·³¡«
wget http://www.boutell.com/gd/http/gd-2.0.11.tar.gz
tar zxvf gd-2.0.11 ......
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