Linux sysinfo获取系统相关信息

Linux中,可以用sysinfo来获取系统相关信息。

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#include <stdio.h>       #include <stdlib.h>       #include <errno.h>       #include <linux/unistd.h>       /* for _syscallX macros/related stuff */       #include <linux/kernel.h>       /* for struct sysinfo */         //_syscall1(int, sysinfo, struct sysinfo *, info);         /* Note: if you copy directly from the nroff source, remember to *        REMOVE the extra backslashes in the printf statement. */         int       main(void)       {           struct sysinfo s_info;           int error;             error = sysinfo(&s_info);           printf("code error = %d\n", error);           printf("Uptime = %lds\nLoad: 1 min %lu / 5 min %lu / 15 min %lu\n"                  "RAM: total %lu / free %lu / shared %lu\n"                  "Memory in buffers = %lu\nSwap: total %lu / free %lu\n"                  "Number of processes = %d\n",                  s_info.uptime, s_info.loads[0],                  s_info.loads[1], s_info.loads[2],                  s_info.totalram, s_info.freeram,                  s_info.sharedram, s_info.bufferram,                  s_info.totalswap, s_info.freeswap,                  s_info.procs);           exit(EXIT_SUCCESS);       }

　　

 

code error = 0
Uptime = 47428s
Load: 1 min 192 / 5 min 2272 / 15 min 2976
RAM: total 1027239936 / free 249516032 / shared 0
Memory in buffers = 0
Swap: total 2147479552 / free 2092707840
Number of processes = 391