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#include <sys/types.h>
#include <sys/socket.h>
int getsockopt
(int sock, int level, int optname, void *optval, socklen_t *optlen);
int setsockopt
(int sock, int level, int optname, const void *optval, socklen_t optlen);
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¡¡¡¡1) [root@q1test01 ~]# cat /proc/version
¡¡¡¡ Linux version 2.6.9-22.ELsmp (bhcompile@crowe.devel.redhat.com) (gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)) #1 SMP Mon Sep 19 18:00:54 EDT 2005
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Disk /dev/sda: 160.0 GB, 160040803840 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot   ......