16 lines
259 B
C
16 lines
259 B
C
#include "kernel/types.h"
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#include "user/user.h"
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int main(int argc, char *argv[]) {
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if (argc != 1) {
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// 错误输出到stderr（文件描述符2）
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fprintf(2, "Usage: uptime\n");
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exit(1);
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}
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fprintf(1,"up: %d\n",uptime());
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exit(0);
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}
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