restracer

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#include <unistd.h> /* usleep() */
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#include <stdio.h>  /* printf() */
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#include <stdlib.h> /* atoi() */
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int main(int argc, char **argv) {
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if(2 == argc) {
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    useconds_t us;
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    us = atoi(argv[1]) * 1000;
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    return usleep(us);
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    }
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else {
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    printf("Usage:   %s <ms>\n", 1 == argc ? argv[0] : "usleep");
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    printf("Example: %s 5\n", 1 == argc ? argv[0] : "usleep");
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    return 0;
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    }
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}
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