68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/log/log.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/calls/struct/utsname.h"
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#include "libc/calls/calls.h"
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#include "libc/sysv/consts/exit.h"
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#include "third_party/getopt/getopt.h"
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int main(int argc, char *argv[]) {
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unsigned need = 0;
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int opt;
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while ((opt = getopt(argc, argv, "hasnrvmd")) != -1) {
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switch (opt) {
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case 'a':
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need |= 0b111111;
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break;
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case 's':
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need |= 0b000001;
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break;
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case 'n':
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need |= 0b000010;
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break;
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case 'r':
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need |= 0b000100;
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break;
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case 'v':
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need |= 0b001000;
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break;
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case 'm':
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need |= 0b010000;
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break;
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case 'd':
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need |= 0b100000;
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break;
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default: /* -? or -h */
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fprintf(stderr, "%s: %s [%s]\n%s", "Usage", argv[0], "FLAGS",
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" -a\tprint all\n"
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" -s\tprint sysname\n"
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" -n\tprint nodename\n"
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" -r\tprint release\n"
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" -v\tprint version\n"
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" -m\tprint machine\n"
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" -d\tprint domainname\n");
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exit(EXIT_FAILURE);
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}
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}
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if (!need) need = 0b000001;
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struct utsname data;
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if (uname(&data) == -1) perror("uname"), exit(EXIT_FAILURE);
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if (need & 0b000001) printf("%s ", data.sysname);
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if (need & 0b000010) printf("%s ", data.nodename);
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if (need & 0b000100) printf("%s ", data.release);
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if (need & 0b001000) printf("%s ", data.version);
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if (need & 0b010000) printf("%s ", data.machine);
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if (need & 0b100000) printf("%s ", data.domainname);
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printf("\n");
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return 0;
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}
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