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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
access1.cpp:-1


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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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LinuxÖÐʹÓÃÃüÁîÐÐʱ£¬ÓÐʱÐèÒª²éÕÒËùÐèÒªµÄÎļþ¡£ShellÌṩÁËÒ»Ì××Ö·û´®Ä£Ê½Æ¥Å乿Ôò£¬»ò³ÆÖ®ÎªÔª×Ö·û´®¡£¿ÉÒÔ°´ÕÕËùÒªÇóµÄģʽÀ´Æ¥ÅäÎļþ£¬»¹¿ÉÒÔʹÓÃ×Ö·ûÀàÐÍÀ´Æ¥ÅäÎļþÃû¡£ÔÚ´ËÖ÷Òª½éÉܼ¸ÖÖ³£¼ûµÄÌØÊâ×Ö·û£º
1¡¢*  Æ¥ÅäÎļþÃûÖеÄÈκÎ×Ö·û´®£¬°üÀ¨¿Õ×Ö·û´®£»
2¡¢£¿ Æ¥ÅäÎļþÃûÖеÄÈκε¥×Ö·û´®
3¡¢£Û….£ ......

µÚÒ»²¿·Ö µÚÈýÕ LinuxÖ÷»úµÄ¹æ»®

µÚÒ»²¿·Ö µÚÈýÕ LinuxÖ÷»úµÄ¹æ»®
    1.¼ÆËã»úÓ²¼þÅäÖûù±¾ÖªÊ¶£¨ÂÔ£©
    2.LinuxÖеÄÓ²¼þÇý¶¯ºÅ£¬ÔÚLinuxÖÐÿ¸öÉ豸¶¼±»µ±³ÉÒ»¸öÎļþÀ´´¦Àí
    IDEÓ²ÅÌ£º /dev/hd[a-d]
    SCSIÓ²ÅÌ£º/dev/sd[a-p]
    UÅÌ£º    &nbs ......

linux£ºDynamic MMap ran out of room

    µ±ÎÒµÄubuntu½øÐÐÈç³£µÄ¸üÐÂʱ£¬Í»È»¸æËßÎÒDynamic MMap ran out of room.È»ºógoogleµÃ½â·¨£¬¼Ç¼ÈçÏ£º
    sudo gedit /etc/apt/apt.conf.d/70debconf
    ÔöÌíÒÔÏÂÁ½ÐУºAPT::Cache-Limit "200000000";
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linuxÏÂapache+php°²×°³£¼ûÎÊÌâ
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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