44 lines
766 B
C
44 lines
766 B
C
#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/resource.h>
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int main(int argc, char **argv) {
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int oldp = getpriority(PRIO_PROCESS, 0);
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int adj = 10;
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int opt;
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while ((opt = getopt(argc, argv, "n:")) != -1) {
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switch (opt) {
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case 'n':
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adj = atoi(optarg);
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break;
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default:
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printf("nice [n] [cmd] [arg1] [arg2]\n\t-n N Add N to the niceness\n");
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return 0;
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}
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}
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argv += optind;
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argc -= optind;
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if (argc == 0) {
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printf("%d\n", oldp);
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return 0;
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}
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if (setpriority(PRIO_PROCESS, 0, oldp + adj) < 0) {
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fprintf(stderr, "nice: %s\n", strerror(errno));
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return 1;
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}
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execvp(argv[0], argv);
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fprintf(stderr, "nice: %s: %s\n", argv[0], strerror(errno));
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return 1;
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}
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