34 lines
555 B
C
34 lines
555 B
C
/* sleep - suspend a process for x sec Author: Andy Tanenbaum */
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#include <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <minix/minlib.h>
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int main(int argc, char **argv);
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int main(argc, argv)
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int argc;
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char *argv[];
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{
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register seconds;
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register char c;
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seconds = 0;
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if (argc != 2) {
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std_err("Usage: sleep time\n");
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exit(1);
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}
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while (c = *(argv[1])++) {
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if (c < '0' || c > '9') {
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std_err("sleep: bad arg\n");
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exit(1);
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}
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seconds = 10 * seconds + (c - '0');
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}
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/* Now sleep. */
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sleep(seconds);
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return(0);
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}
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