shell 生成 UUID

几乎所有Unix和类Unix环境中都包含了一个名为uuidgen的小工具，运行即可生成一个UUID。

#include
#include <uuid/uuid.h>
int main(int argc, char **argv)
{
uuid_t uuid;
uuid_generate(uuid);
unsigned char *p = uuid;
int i;
for (i = 0; i < sizeof(uuid_t); i++, p++)
{
printf("%02x", *p);
}
printf("\n");
return 0;
}

https://blog.csdn.net/huanggang982/article/details/9109847

UUID=$(uuidgen |sed ‘s/-//g’)
echo $UUID
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