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Make examples folder somewhat more focused

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This commit is contained in:
Justine Tunney 2021-03-05 06:09:12 -08:00
parent 5141d00992
commit e26bdbec52
29 changed files with 133 additions and 1225 deletions
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67
examples/uname.c
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@ -1,67 +0,0 @@
#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/log/log.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/calls/struct/utsname.h"
#include "libc/calls/calls.h"
#include "libc/sysv/consts/exit.h"
#include "third_party/getopt/getopt.h"
int main(int argc, char *argv[]) {
unsigned need = 0;
int opt;
while ((opt = getopt(argc, argv, "hasnrvmd")) != -1) {
switch (opt) {
case 'a':
need |= 0b111111;
break;
case 's':
need |= 0b000001;
break;
case 'n':
need |= 0b000010;
break;
case 'r':
need |= 0b000100;
break;
case 'v':
need |= 0b001000;
break;
case 'm':
need |= 0b010000;
break;
case 'd':
need |= 0b100000;
break;
default: /* -? or -h */
fprintf(stderr, "%s: %s [%s]\n%s", "Usage", argv[0], "FLAGS",
" -a\tprint all\n"
" -s\tprint sysname\n"
" -n\tprint nodename\n"
" -r\tprint release\n"
" -v\tprint version\n"
" -m\tprint machine\n"
" -d\tprint domainname\n");
exit(EXIT_FAILURE);
}
}
if (!need) need = 0b000001;
struct utsname data;
if (uname(&data) == -1) perror("uname"), exit(EXIT_FAILURE);
if (need & 0b000001) printf("%s ", data.sysname);
if (need & 0b000010) printf("%s ", data.nodename);
if (need & 0b000100) printf("%s ", data.release);
if (need & 0b001000) printf("%s ", data.version);
if (need & 0b010000) printf("%s ", data.machine);
if (need & 0b100000) printf("%s ", data.domainname);
printf("\n");
return 0;
}